Definition of countdown in English:

countdown

nounˈkaʊntdaʊnˈkaʊn(t)daʊn

1An act of counting numerals in reverse order to zero, especially before the launching of a rocket or missile.
（尤指火箭或导弹发射前的）倒计数，倒读数
the missiles' launch crews would begin their final countdown
导弹发射的全体人员将开始最后的倒计数了。
Example sentencesExamples
- The countdown was stopped when a problem was detected in the computer dialogue between the control center and the launcher.
- In Florida today, NASA beginning its countdown for the first space shuttle launch since the Columbia disaster more than two years ago.
- When all of these steps have been completed, a complete dress rehearsal of the final days of the countdown and liftoff is conducted.
- The mental countdown continued in his head: four, three, two, one.
- The countdown will resume at the beginning of next week.
- More and more of a crowd began to enter the room, stuffing the whole area and turning it into a claustrophobic matchbox as the final countdown began.
- The eleven o'clock ‘off’ from the City Hall came quickly and with the countdown from ten to zero, the Santas were on their way.
- To follow the launch countdown and the post-launch events watch the live webcam from the mission control room and follow our simplified launch status table in the attached link.
- The US space agency NASA began its countdown Saturday for tomorrow's rescheduled launch of the Space Shuttle Discovery.
- Everyone leaned forward in anticipation as the final countdown began.
- From behind me Ben shouted out a countdown, and then began his eight beat introduction.
- The countdown has begun for Atlantis to lift off Thursday.
- Initial data analysis performed last night showed that the countdown, engine ignition and initial phase of flight were normal.
- So far he's been seen baiting the crowd with false information, and leading them in a countdown from 10 to zero for no apparent reason.
- When I surfaced, I heard the countdown beginning from ten.
- As the countdown reached zero he fully squeezed the trigger.
- Dr. Kraft worked to develop the countdown, launch, and flight procedures, as well as the design of Mission Control itself at the Cape and later in Houston.
- Any pre-launch irregularities noted during a countdown can cause a launch to be aborted.
- A series of meetings will take place Thursday to discuss the problem and determine the steps necessary to get back into the launch countdown.
- The computer beeped a countdown from five to zero, and wooden spheres appeared and swooped down to try to hit the user.
- All the while, we watch as a nuclear bomb starts a countdown to zero.
- Once the countdown reached zero the cart began to move, accelerating rather rapidly.
1. 1.1 The period of time leading up to a significant event and the procedures carried out during this time.
  （重大事件发生前的）最后时刻；最后时刻的工作
  the countdown to your holiday
  Example sentencesExamples
  While people are taking to the streets in unprecedented numbers, the countdown to war is inexorably proceeding.
  But, as the countdown to a possible war continues, the views of a politician who argues against war, under any circumstances, provide a different perspective on the debate.
  The countdown has started for teachers from around the United States striving to become permanent members of NASA's Astronaut Corps.
  As the countdown to war continues Britain can be expected to contribute at least 12,000 troops as well as RAF, Navy and Special Forces units.
  He was forced to redraft this advice as the countdown to war continued.
  Cycling is a sport obsessed with numbers and as the countdown to next year's Commonwealth Games gathers momentum, such figures come into sharper focus.
  With just 12 weeks to go until the Oscars, the Los Angeles Film Critics' Association awards mark the start of the countdown to the showpiece event.
  The White House stood shrouded in weekend quiet, but the countdown to war was continuing.
  A convoy of lorries was seen heading towards B - 52 bombers at RAF Fairford yesterday as the countdown to war in Iraq entered its final hours.
  The final countdown has begun for the release of the latest instalment in the adventures of storybook wizard Harry Potter.
  Libraries across North Wiltshire will resound with festive cheer in the countdown to Christmas with a series of special events for children.
  In the countdown to war, the aluminium tubes remained in the political spotlight and the fight between the US intelligence agencies was now on in earnest.
  The countdown has begun for the launch of the latest reality TV show from Endemol, the makers of Big Brother, and this really could be the one to end them all.
  With the holiday period drawing to a close, for many today will be their final 24 hours free from the toils of labour, before a return to work and the seemingly perpetual countdown to the summer holiday.
  Living as I do in mainland Europe, every day of the past few months has been a countdown to the Euro.
  We are fast approaching the countdown to our big event.
  This should serve as a timely warning to all as the countdown to Hallowe'en continues.
  So in the final countdown, how are they doing, and how are their support crews of officials and friends helping out with last minute preparations?
  But there's a lot of pressure at the moment with the countdown to this UN deadline, also to try and resolve the issue of peacekeepers as well.
  In the countdown to Christmas a host of events are planned, including a new Children's Fair from November 18 to 20 in and around Parliament Street.
2. 1.2 A digital display that counts down.
  倒计时显示器
  a key toggles the countdown on and off
  Example sentencesExamples
  He pressed the command conformation key, but the countdown didn't cease to stop.
  Everybody was waiting: a digital clock overhead marked the minutes, repeated the countdown from 15 to the moment of decision.
  A countdown is displayed over the grenade, and you see the exact trajectory it will take.
  The best is a digital countdown timer, but any watch or one-minute hand timer will do.
  A clock now marks the countdown to the one-year anniversary.
  I will never employ any device with a digital countdown.
  After her first attempt to crack the code failed (she guessed it), the countdown appeared on the clock's display.
  The countdown on the screen was now at twenty seconds.
  Allison smiled as she watched the five-minute countdown activate on the monitor.
  Chris was standing with Chrissy on his arm, both of them watching the large digital countdown clock, which read five minutes.
  Recently, the impregnable force field surrounding this device began to display a countdown clock that suggested it would deliver its message at noon yesterday.
  To commemorate the closing of Veterans Stadium, the Phillies are displaying a countdown banner on the out field wall that shows how many home games remain.
  I notice a digital countdown projected below the Napoleon-guy: 1.69, and quickly descending.
  A computer monitor ran a countdown silently, reading ‘3: 40,’ and was dropping fast.

Definition of countdown in US English:

countdown

nounˈkaʊn(t)daʊnˈkoun(t)doun

1usually in singular An act of counting numerals in reverse order to zero, especially to time the last seconds before the launching of a rocket or missile.
（尤指火箭或导弹发射前的）倒计数，倒读数
the launch crews would begin their final countdown
导弹发射的全体人员将开始最后的倒计数了。
Example sentencesExamples
- As the countdown reached zero he fully squeezed the trigger.
- When all of these steps have been completed, a complete dress rehearsal of the final days of the countdown and liftoff is conducted.
- The US space agency NASA began its countdown Saturday for tomorrow's rescheduled launch of the Space Shuttle Discovery.
- The eleven o'clock ‘off’ from the City Hall came quickly and with the countdown from ten to zero, the Santas were on their way.
- Everyone leaned forward in anticipation as the final countdown began.
- To follow the launch countdown and the post-launch events watch the live webcam from the mission control room and follow our simplified launch status table in the attached link.
- From behind me Ben shouted out a countdown, and then began his eight beat introduction.
- Initial data analysis performed last night showed that the countdown, engine ignition and initial phase of flight were normal.
- In Florida today, NASA beginning its countdown for the first space shuttle launch since the Columbia disaster more than two years ago.
- The countdown has begun for Atlantis to lift off Thursday.
- All the while, we watch as a nuclear bomb starts a countdown to zero.
- More and more of a crowd began to enter the room, stuffing the whole area and turning it into a claustrophobic matchbox as the final countdown began.
- So far he's been seen baiting the crowd with false information, and leading them in a countdown from 10 to zero for no apparent reason.
- Any pre-launch irregularities noted during a countdown can cause a launch to be aborted.
- The mental countdown continued in his head: four, three, two, one.
- The countdown was stopped when a problem was detected in the computer dialogue between the control center and the launcher.
- Once the countdown reached zero the cart began to move, accelerating rather rapidly.
- The computer beeped a countdown from five to zero, and wooden spheres appeared and swooped down to try to hit the user.
- Dr. Kraft worked to develop the countdown, launch, and flight procedures, as well as the design of Mission Control itself at the Cape and later in Houston.
- When I surfaced, I heard the countdown beginning from ten.
- A series of meetings will take place Thursday to discuss the problem and determine the steps necessary to get back into the launch countdown.
- The countdown will resume at the beginning of next week.
1. 1.1often countdown to The final moments before a significant event and the procedures carried out during this time.
  （重大事件发生前的）最后时刻；最后时刻的工作
  it is hard to imagine the countdown to war continuing without an intensification of diplomacy
  战争一触即发，而外交努力却没有加强，这是难以想像的。
  Example sentencesExamples
  While people are taking to the streets in unprecedented numbers, the countdown to war is inexorably proceeding.
  Libraries across North Wiltshire will resound with festive cheer in the countdown to Christmas with a series of special events for children.
  So in the final countdown, how are they doing, and how are their support crews of officials and friends helping out with last minute preparations?
  In the countdown to Christmas a host of events are planned, including a new Children's Fair from November 18 to 20 in and around Parliament Street.
  The final countdown has begun for the release of the latest instalment in the adventures of storybook wizard Harry Potter.
  With the holiday period drawing to a close, for many today will be their final 24 hours free from the toils of labour, before a return to work and the seemingly perpetual countdown to the summer holiday.
  The White House stood shrouded in weekend quiet, but the countdown to war was continuing.
  But, as the countdown to a possible war continues, the views of a politician who argues against war, under any circumstances, provide a different perspective on the debate.
  The countdown has started for teachers from around the United States striving to become permanent members of NASA's Astronaut Corps.
  With just 12 weeks to go until the Oscars, the Los Angeles Film Critics' Association awards mark the start of the countdown to the showpiece event.
  We are fast approaching the countdown to our big event.
  In the countdown to war, the aluminium tubes remained in the political spotlight and the fight between the US intelligence agencies was now on in earnest.
  Cycling is a sport obsessed with numbers and as the countdown to next year's Commonwealth Games gathers momentum, such figures come into sharper focus.
  This should serve as a timely warning to all as the countdown to Hallowe'en continues.
  He was forced to redraft this advice as the countdown to war continued.
  But there's a lot of pressure at the moment with the countdown to this UN deadline, also to try and resolve the issue of peacekeepers as well.
  A convoy of lorries was seen heading towards B - 52 bombers at RAF Fairford yesterday as the countdown to war in Iraq entered its final hours.
  As the countdown to war continues Britain can be expected to contribute at least 12,000 troops as well as RAF, Navy and Special Forces units.
  The countdown has begun for the launch of the latest reality TV show from Endemol, the makers of Big Brother, and this really could be the one to end them all.
  Living as I do in mainland Europe, every day of the past few months has been a countdown to the Euro.
2. 1.2 A digital display that counts down.
  倒计时显示器
  Example sentencesExamples
  A clock now marks the countdown to the one-year anniversary.
  Everybody was waiting: a digital clock overhead marked the minutes, repeated the countdown from 15 to the moment of decision.
  A countdown is displayed over the grenade, and you see the exact trajectory it will take.
  Recently, the impregnable force field surrounding this device began to display a countdown clock that suggested it would deliver its message at noon yesterday.
  He pressed the command conformation key, but the countdown didn't cease to stop.
  I notice a digital countdown projected below the Napoleon-guy: 1.69, and quickly descending.
  Chris was standing with Chrissy on his arm, both of them watching the large digital countdown clock, which read five minutes.
  A computer monitor ran a countdown silently, reading ‘3: 40,’ and was dropping fast.
  The countdown on the screen was now at twenty seconds.
  To commemorate the closing of Veterans Stadium, the Phillies are displaying a countdown banner on the out field wall that shows how many home games remain.
  Allison smiled as she watched the five-minute countdown activate on the monitor.
  The best is a digital countdown timer, but any watch or one-minute hand timer will do.
  After her first attempt to crack the code failed (she guessed it), the countdown appeared on the clock's display.
  I will never employ any device with a digital countdown.

词汇	countdown
释义	Definition of countdown in English: countdown nounˈkaʊntdaʊnˈkaʊn(t)daʊn 1An act of counting numerals in reverse order to zero, especially before the launching of a rocket or missile. （尤指火箭或导弹发射前的）倒计数，倒读数 the missiles' launch crews would begin their final countdown 导弹发射的全体人员将开始最后的倒计数了。 Example sentencesExamples The countdown was stopped when a problem was detected in the computer dialogue between the control center and the launcher. In Florida today, NASA beginning its countdown for the first space shuttle launch since the Columbia disaster more than two years ago. When all of these steps have been completed, a complete dress rehearsal of the final days of the countdown and liftoff is conducted. The mental countdown continued in his head: four, three, two, one. The countdown will resume at the beginning of next week. More and more of a crowd began to enter the room, stuffing the whole area and turning it into a claustrophobic matchbox as the final countdown began. The eleven o'clock ‘off’ from the City Hall came quickly and with the countdown from ten to zero, the Santas were on their way. To follow the launch countdown and the post-launch events watch the live webcam from the mission control room and follow our simplified launch status table in the attached link. The US space agency NASA began its countdown Saturday for tomorrow's rescheduled launch of the Space Shuttle Discovery. Everyone leaned forward in anticipation as the final countdown began. From behind me Ben shouted out a countdown, and then began his eight beat introduction. The countdown has begun for Atlantis to lift off Thursday. Initial data analysis performed last night showed that the countdown, engine ignition and initial phase of flight were normal. So far he's been seen baiting the crowd with false information, and leading them in a countdown from 10 to zero for no apparent reason. When I surfaced, I heard the countdown beginning from ten. As the countdown reached zero he fully squeezed the trigger. Dr. Kraft worked to develop the countdown, launch, and flight procedures, as well as the design of Mission Control itself at the Cape and later in Houston. Any pre-launch irregularities noted during a countdown can cause a launch to be aborted. A series of meetings will take place Thursday to discuss the problem and determine the steps necessary to get back into the launch countdown. The computer beeped a countdown from five to zero, and wooden spheres appeared and swooped down to try to hit the user. All the while, we watch as a nuclear bomb starts a countdown to zero. Once the countdown reached zero the cart began to move, accelerating rather rapidly. 1.1 The period of time leading up to a significant event and the procedures carried out during this time. （重大事件发生前的）最后时刻；最后时刻的工作 the countdown to your holiday Example sentencesExamples While people are taking to the streets in unprecedented numbers, the countdown to war is inexorably proceeding. But, as the countdown to a possible war continues, the views of a politician who argues against war, under any circumstances, provide a different perspective on the debate. The countdown has started for teachers from around the United States striving to become permanent members of NASA's Astronaut Corps. As the countdown to war continues Britain can be expected to contribute at least 12,000 troops as well as RAF, Navy and Special Forces units. He was forced to redraft this advice as the countdown to war continued. Cycling is a sport obsessed with numbers and as the countdown to next year's Commonwealth Games gathers momentum, such figures come into sharper focus. With just 12 weeks to go until the Oscars, the Los Angeles Film Critics' Association awards mark the start of the countdown to the showpiece event. The White House stood shrouded in weekend quiet, but the countdown to war was continuing. A convoy of lorries was seen heading towards B - 52 bombers at RAF Fairford yesterday as the countdown to war in Iraq entered its final hours. The final countdown has begun for the release of the latest instalment in the adventures of storybook wizard Harry Potter. Libraries across North Wiltshire will resound with festive cheer in the countdown to Christmas with a series of special events for children. In the countdown to war, the aluminium tubes remained in the political spotlight and the fight between the US intelligence agencies was now on in earnest. The countdown has begun for the launch of the latest reality TV show from Endemol, the makers of Big Brother, and this really could be the one to end them all. With the holiday period drawing to a close, for many today will be their final 24 hours free from the toils of labour, before a return to work and the seemingly perpetual countdown to the summer holiday. Living as I do in mainland Europe, every day of the past few months has been a countdown to the Euro. We are fast approaching the countdown to our big event. This should serve as a timely warning to all as the countdown to Hallowe'en continues. So in the final countdown, how are they doing, and how are their support crews of officials and friends helping out with last minute preparations? But there's a lot of pressure at the moment with the countdown to this UN deadline, also to try and resolve the issue of peacekeepers as well. In the countdown to Christmas a host of events are planned, including a new Children's Fair from November 18 to 20 in and around Parliament Street. 1.2 A digital display that counts down. 倒计时显示器 a key toggles the countdown on and off Example sentencesExamples He pressed the command conformation key, but the countdown didn't cease to stop. Everybody was waiting: a digital clock overhead marked the minutes, repeated the countdown from 15 to the moment of decision. A countdown is displayed over the grenade, and you see the exact trajectory it will take. The best is a digital countdown timer, but any watch or one-minute hand timer will do. A clock now marks the countdown to the one-year anniversary. I will never employ any device with a digital countdown. After her first attempt to crack the code failed (she guessed it), the countdown appeared on the clock's display. The countdown on the screen was now at twenty seconds. Allison smiled as she watched the five-minute countdown activate on the monitor. Chris was standing with Chrissy on his arm, both of them watching the large digital countdown clock, which read five minutes. Recently, the impregnable force field surrounding this device began to display a countdown clock that suggested it would deliver its message at noon yesterday. To commemorate the closing of Veterans Stadium, the Phillies are displaying a countdown banner on the out field wall that shows how many home games remain. I notice a digital countdown projected below the Napoleon-guy: 1.69, and quickly descending. A computer monitor ran a countdown silently, reading ‘3: 40,’ and was dropping fast. Definition of countdown in US English: countdown nounˈkaʊn(t)daʊnˈkoun(t)doun 1usually in singular An act of counting numerals in reverse order to zero, especially to time the last seconds before the launching of a rocket or missile. （尤指火箭或导弹发射前的）倒计数，倒读数 the launch crews would begin their final countdown 导弹发射的全体人员将开始最后的倒计数了。 Example sentencesExamples As the countdown reached zero he fully squeezed the trigger. When all of these steps have been completed, a complete dress rehearsal of the final days of the countdown and liftoff is conducted. The US space agency NASA began its countdown Saturday for tomorrow's rescheduled launch of the Space Shuttle Discovery. The eleven o'clock ‘off’ from the City Hall came quickly and with the countdown from ten to zero, the Santas were on their way. Everyone leaned forward in anticipation as the final countdown began. To follow the launch countdown and the post-launch events watch the live webcam from the mission control room and follow our simplified launch status table in the attached link. From behind me Ben shouted out a countdown, and then began his eight beat introduction. Initial data analysis performed last night showed that the countdown, engine ignition and initial phase of flight were normal. In Florida today, NASA beginning its countdown for the first space shuttle launch since the Columbia disaster more than two years ago. The countdown has begun for Atlantis to lift off Thursday. All the while, we watch as a nuclear bomb starts a countdown to zero. More and more of a crowd began to enter the room, stuffing the whole area and turning it into a claustrophobic matchbox as the final countdown began. So far he's been seen baiting the crowd with false information, and leading them in a countdown from 10 to zero for no apparent reason. Any pre-launch irregularities noted during a countdown can cause a launch to be aborted. The mental countdown continued in his head: four, three, two, one. The countdown was stopped when a problem was detected in the computer dialogue between the control center and the launcher. Once the countdown reached zero the cart began to move, accelerating rather rapidly. The computer beeped a countdown from five to zero, and wooden spheres appeared and swooped down to try to hit the user. Dr. Kraft worked to develop the countdown, launch, and flight procedures, as well as the design of Mission Control itself at the Cape and later in Houston. When I surfaced, I heard the countdown beginning from ten. A series of meetings will take place Thursday to discuss the problem and determine the steps necessary to get back into the launch countdown. The countdown will resume at the beginning of next week. 1.1often countdown to The final moments before a significant event and the procedures carried out during this time. （重大事件发生前的）最后时刻；最后时刻的工作 it is hard to imagine the countdown to war continuing without an intensification of diplomacy 战争一触即发，而外交努力却没有加强，这是难以想像的。 Example sentencesExamples While people are taking to the streets in unprecedented numbers, the countdown to war is inexorably proceeding. Libraries across North Wiltshire will resound with festive cheer in the countdown to Christmas with a series of special events for children. So in the final countdown, how are they doing, and how are their support crews of officials and friends helping out with last minute preparations? In the countdown to Christmas a host of events are planned, including a new Children's Fair from November 18 to 20 in and around Parliament Street. The final countdown has begun for the release of the latest instalment in the adventures of storybook wizard Harry Potter. With the holiday period drawing to a close, for many today will be their final 24 hours free from the toils of labour, before a return to work and the seemingly perpetual countdown to the summer holiday. The White House stood shrouded in weekend quiet, but the countdown to war was continuing. But, as the countdown to a possible war continues, the views of a politician who argues against war, under any circumstances, provide a different perspective on the debate. The countdown has started for teachers from around the United States striving to become permanent members of NASA's Astronaut Corps. With just 12 weeks to go until the Oscars, the Los Angeles Film Critics' Association awards mark the start of the countdown to the showpiece event. We are fast approaching the countdown to our big event. In the countdown to war, the aluminium tubes remained in the political spotlight and the fight between the US intelligence agencies was now on in earnest. Cycling is a sport obsessed with numbers and as the countdown to next year's Commonwealth Games gathers momentum, such figures come into sharper focus. This should serve as a timely warning to all as the countdown to Hallowe'en continues. He was forced to redraft this advice as the countdown to war continued. But there's a lot of pressure at the moment with the countdown to this UN deadline, also to try and resolve the issue of peacekeepers as well. A convoy of lorries was seen heading towards B - 52 bombers at RAF Fairford yesterday as the countdown to war in Iraq entered its final hours. As the countdown to war continues Britain can be expected to contribute at least 12,000 troops as well as RAF, Navy and Special Forces units. The countdown has begun for the launch of the latest reality TV show from Endemol, the makers of Big Brother, and this really could be the one to end them all. Living as I do in mainland Europe, every day of the past few months has been a countdown to the Euro. 1.2 A digital display that counts down. 倒计时显示器 Example sentencesExamples A clock now marks the countdown to the one-year anniversary. Everybody was waiting: a digital clock overhead marked the minutes, repeated the countdown from 15 to the moment of decision. A countdown is displayed over the grenade, and you see the exact trajectory it will take. Recently, the impregnable force field surrounding this device began to display a countdown clock that suggested it would deliver its message at noon yesterday. He pressed the command conformation key, but the countdown didn't cease to stop. I notice a digital countdown projected below the Napoleon-guy: 1.69, and quickly descending. Chris was standing with Chrissy on his arm, both of them watching the large digital countdown clock, which read five minutes. A computer monitor ran a countdown silently, reading ‘3: 40,’ and was dropping fast. The countdown on the screen was now at twenty seconds. To commemorate the closing of Veterans Stadium, the Phillies are displaying a countdown banner on the out field wall that shows how many home games remain. Allison smiled as she watched the five-minute countdown activate on the monitor. The best is a digital countdown timer, but any watch or one-minute hand timer will do. After her first attempt to crack the code failed (she guessed it), the countdown appeared on the clock's display. I will never employ any device with a digital countdown.
随便看	not taking no for an answer not taut nottaway Nottaway notted not tell not tell a soul not that not that not the full quid not the full quid not the full shilling not the full shilling not the least bit not the only pebble on the beach not the only pebble on the beach not there not-thereness not the same not the sharpest knife in the drawer not the sharpest knife in the drawer not the sharpest tool in the shed not the slightest bit not think much of not think twice about