1Force or throw (something) out, typically in a violent or sudden way.

多种岩石以固体碎屑形式从火山中喷发出来。

1. 1.1 Cause (something) to drop out or be removed, usually mechanically.
   he ejected the spent cartridge

   Example sentencesExamples

   • Spent casings were ejected cleanly and unmarred.
   • When installation is complete, the machine will eject the CD.
   • To load the next round manually your thumb sends the slide forward ejecting the spent case.
   • He ejected the spent clip in the gun and replaced it with a new one.
   • The missile is ejected from the submarine by high-pressure gas.
   • The access card was ejected from the slot and the door hissed open.
   • But, when the clips are not used, the ejector will not extract and eject the spent casings, so clips are almost mandatory in this or any revolver that uses rimless cartridges.
   • They would either use the extinguisher as they felt necessary or if they were in the process of testing it they would wish to see powder being ejected from the extinguisher…
   • The voice recorder's internal components were ejected from the container when the plane crashed, Tsolakis said.
   • The tiny lander has not been heard from since it was ejected from a European Space Agency orbiter in mid-December.
   • The estimated £50m mission was carried to Mars by the European Space Agency craft Mars Express, but nothing was heard from the probe after it was ejected from its mother ship.
   • After a few outings the firearm began to fail to eject the spent casing from the chamber.
   • When the latch was opened and the barrel allowed to tip forward, cartridges were automatically ejected from the cylinder.
   • For one thing, the button for the CD-ROM door is only good for ejecting the drive tray.
   • This ejects the spent cartridges, permitting new rounds to be inserted.
   • There is a disk in the CD drive, and it will not let me eject it.
   • The DVD is then ejected from a dispensing podium into your fingertips!
   • The air- and spring-launch parachutes are ejected from their bags using a spring coil or an air cylinder attached to a plunger.
   • For example, many popular actions use spring-loaded plunger ejectors in the bolt face to eject spent cases.
   • Bullet shell casings are ejected from the weapon of the shooter; they are not found near the target of the gunman.
2. 1.2no object (of a pilot) escape from an aircraft by being explosively propelled out of it.
   （飞行员从飞机中）弹射出来
   he flew to open sea, put the plane in a nosedive, and ejected

   他将飞机飞到外海，然后急速俯冲并从中弹射出来。

   Example sentencesExamples

   • Somehow the pilot managed to wrestle the aircraft level and eject, rocketing away on a plume of fire.
   • Two pilots ejected to safety and were only slightly injured when they landed.
   • The pilot ejected safely from the aircraft and was recovered by coalition ground forces near the airport.
   • The pilot ejected safely, he was unharmed and it was the first crash of a preproduction version of that aircraft.
   • In two similar incidents, both pilots had to eject because of aircraft damage.
   • Population density was also growing and both pilots were increasingly concerned about where to eject from the aircraft to minimize any injury or damage on the ground.
   • The pilot had ejected safely from the aircraft and was recovered before she got there to provide air cover.
   • The pilot apparently ejected just forward of the bow and below flight-deck level at approximately 85 degrees angle-of-bank.
   • The cosmonaut ejected 4,000 meters above the ground and floated to Earth on a parachute.
   • And there are reports that indicate that the Chinese pilot was able to eject, but we have seen no trace of him so far.
   • The plane apparently developed engine trouble shortly after take-off and the pilot and co-pilot ejected safely from the plane.
   • Thankfully both the pilot and the navigator ejected safely.
   • The pilot of that fighter ejected before the crash.
   • Witnesses described a loud bang, the pilot ejecting then the plane veering upwards into the sky, then crashing straight down.
   • Aircraft becomes uncontrollable, and the pilot ejects, resulting in Class-A mishap.
   • It flew into another funnel and was thrown through the air before the pilot finally ejected and the fighter fell to the ground.
   • The good news is the pilot safely ejected and will be around to be in all the holiday festivities.
   • The pilot ejected and there were no casualties, but the plane exploded after crashing and there is a huge crater in the ground about 60 feet deep.
   • There was a loud bang, and the canopy hit me in the face as the pilot ejected.
   • The remaining pilots ejected from their planes.

   Synonyms

   bail out, escape, leave the aircraft, get out, parachute to safety
3. 1.3 Compel (someone) to leave a place.
   驱逐，赶走（某人）
   angry supporters were forcibly ejected from the court

   愤怒的支持者们被强制逐出法庭。

   Example sentencesExamples

   • An earlier inquest was adjourned after hearing that David was ejected from the event by doormen.
   • Last year, a Victorian MP was ejected from parliament for breastfeeding her baby.
   • There was no news, the Space Center was a black-out, the press corps waiting for the landing was ejected from the Kennedy Center.
   • Mr Jones says he and his wife Maria were ejected from the hall despite being invited to attend by an Alliance member.
   • Despite apologising and claiming, ‘I didn't mean anything by it,’ the miscreant was summarily ejected from the premises.
   • The band were ejected from the studio, their appearance on the programme cancelled.
   • I've never seen anyone actually spat on - apparently that happens when the louts are ejected from the train - but everything bar that.
   • By and by we were all ejected from the premises, and Hunter couldn't have been happier.
   • Needless to say we were ejected from the premises eventually but it was to be expected.
   • At around 11.50 pm on January 22, the two couples were ejected from the taxi shortly after they got in because they became abusive.
   • David was ejected from the venue by a bouncer.
   • Care should not stop for mothers the day they are ejected from a not-so-local hospital.
   • ‘One of the stewards told me that they were ejected from the racetrack by track management,’ Solis said.
   • It goes without saying if we are ejected from the site alternative premises would have to be found in the area.
   • She had been at the concert as well but had arrived late and saw Mr Kennedy for only 10 minutes before he was ejected from the theatre.
   • The journalist who wrote the story was ejected from a subsequent press conference, joining a lengthy list who were ejected for inappropriate behaviour.
   • A violent street brawl broke out in Bury town centre when two feuding groups were ejected from a nightclub, magistrates heard.
   • Furthermore, at the recent Celtic-Livingston game a female fan who made racist comments was ejected from the Lisbon Lions stand after Celtic fans complained to stewards.
   • He sustained a broken cheek bone after he was forcibly ejected from the establishment.
   • The group were then ejected from the nightclub.

   Synonyms

   expel, throw out, turn out, put out, cast out, remove, oust
4. 1.4 Dismiss (someone), especially from political office.
   开除（尤指某人的政治职务），免…的职
   he was ejected from office in July

   他在7月被解职了。

   Example sentencesExamples

   • The Poles finished with 10 men after one of their players was ejected in the 60th minute.
   • Eleven thousand monks, nuns, and their dependants were ejected from their communities, most with little or no compensation.
   • After Haywood was ejected from the game, another series of fights broke out.
   • The opposition formed a seven-party coalition and ejected the governing party from office for the first time since its formation in 1955.
   • All moderating influences were ejected from the organisation or quit of their own accord.
   • Her decline can be traced long before she was ejected from the education system.
   • He was unceremoniously ejected from his slightly altered, safe Ashford ward by the massed vote of sitting borough councillors in favour of a previously unknown candidate.
   • As an Anglican with strong royalist sympathies, he was ejected from the living in 1647 but was restored in 1662.
   • Should one be surprised by the latest police probe against some of it's own officers for failing to eject an MP from the House last Friday?
   • As well as scrapping the ancient office of Lord Chancellor, the Bill ejects the law lords from the upper chamber and establishes a Judicial Appointments Commission.
   • Furthermore, if the economy continues to falter, it is still possible that the president will be ejected from office in next year's elections.
   • However he was ejected from the seminary at the age of 25, a move which was to have a profound impact on his life.
   • Were not those the goals and tactics of the nationalist movements that drove the French out of Algeria and ejected the British from Egypt?
   • In Bosnia, more than 20 peacekeepers were ejected from the mission for theft and corruption.
   • He was ejected from a history degree at Cambridge.
   • Or that he was ejected from a decisive playoff game against Oakland in '90?
   • The president was forcibly ejected from his office March 24th, when protesters stormed the presidential building.

   Synonyms

   dismiss, remove, discharge, oust, expel, deprive of office, get rid of, throw out, turn out, fling out, force out, drive out
5. 1.5 Emit; give off.
   排出；发出
   plants utilize carbon dioxide in the atmosphere that animals eject

   植物利用空气中动物排出的二氧化碳。

   ejected electrons

   发射的电子。

   Example sentencesExamples

   • Plasma farther away was ejected earlier and had time to cool.
   • Beta ‘rays’ are actually electrons ejected from decaying neutrons, and are now more often referred to as Beta emission or Beta particles.
   • It ejected some intensely acrid fluid, which burnt my tongue so that I was forced to spit the beetle out.
   • When magnetic fields and plasma are ejected from the sun, the ends of the magnetic fields remain attached to the surface.
   • Circularly polarized x rays preferentially eject electrons from atoms magnetically aligned with the polarization axis.
   • As long as the frequency of the light is greater than the work function of the metal, any photon can eject an electron.
   • In such an explosion, the core of a massive star implodes, sending out shock waves that eject the star's outer layers.
   • The massive current from a space storm heats the ionosphere, which dissipates energy by immediately ejecting some of its own oxygen and hydrogen ions into space.
   • Material is ejected in jets that emit radio waves, and the heated gas produces X-ray emission.
   • Physicists have used ultrashort pulses of light to control the motion of electrons ejected from molecules and to produce electron beams just a few nanometres in length.
   • The mass was ejected from the region of the Sun known as AR 798.
   • Now, of course, I knew that most astronomers think a quasar is a black hole with matter falling into it from an accretion disk, and that for some reason it is ejecting charged particles along its magnetic poles.
   • The dark gaps in the rings of Saturn have been understood for many years to occur at just those positions in the ring from which any orbiting particles would be ejected by their chaotic motion.
   • Perhaps even more important is the fact that when using cast bullets, hazardous material may be ejected through the ports.
   • The model suggests that the quasars are ejected from active galaxies in a grand creation process and that we are now seeing the creation process of Day 4 of Creation Week.
   • He directed the beam of ‘strange radiation’ at a piece of paraffin and observed that protons were ejected from the paraffin.
   • An electron would be ejected because one of these quanta had collided with it and given up all its energy.
   • In the process, the spidroin protein molecules uncurl to reveal their uncharged hydrophobic segments, simultaneously ejecting some of the solvated water that it has been carrying until this point.
   • Last February, they observed several hoops of steam being ejected from the crater known as Bocca Nuova.
   • The electrons ejected in the direction of the electric field polarization of the laser light pulse are detected.

   Synonyms

   emit, spew out, pour out, discharge, give off, give out, send out, belch, vent