Definition of roadbed in English:

roadbed

nounˈrəʊdbɛdˈroʊdbɛd

1The material laid down to form a road.
道砟；路床
Example sentencesExamples
- They begin beneath the roadbed where subsurface water meets the advancing frost line and forms a layer of ice, called a lens.
- Extant contracts do not give information about the profile of the roadbed except that it was not to be below the level of the adjacent ground.
- Culverts - metal, plastic or concrete pipes installed under roadbeds to channel runoff - are not always the best solution for drainage, but they are common and sometimes necessary.
- Add such attachments as scarifiers, and graders can even tear up old roadbeds.
- A minority of these roads, although listed with a carriageway of constant thickness, may have had a similar surface profile, provided the roadbed on which they were formed had a central camber.
- Concrete from the demolition of the site's previous buildings was reused in roadbeds.
1. 1.1North American The part of a road on which vehicles travel.
  〈北美〉车行道
  Example sentencesExamples
  Officials said that three storms in the last two months collapsed roads and destroyed roadbeds in the park.
  Repairs are now underway on the roadbed where the pipe burst.
  The roadbed looked like it was made from rectangular white building stones, grouted together carefully, that had been grossly discolored.
  The total area of land being acquired is 141.26 Ha, consisting of 122.42 Ha agricultural land, 10.32 Ha forestry and 8.52 Ha of roadbed.
  Shade helps protect the road from drying out in times of low precipitation; roots stabilize the roadbed.
  As the water drops, submerged trees, rocks, even old roadbeds break the surface or, worse, lurk just below it, waiting to bust a prop or bend a shaft.
  The board said it believes someone crept down to the dusty roadbed after the last vehicle went by and dug in a mine to catch the next passing vehicle.
  Petroleum emulsions work for dust suppression, particularly on dirt roadbeds and shoulders in arid areas.
  Because the melted water cannot drain into the frozen subsoil, the upper lifts of a roadbed become saturated and the road's load bearing capacity is greatly reduced.
  These carefully concealed elevators, built within the highway tunnels located in Portland's West Hills, will have the capacity to lift both vehicles and helicopters to the highway roadbed.
  On our left, a sheering ledge cut off the roadbed.
  Sections of the roadbed where erosion and poor landscaping along steep grades create a safety concern will also be reinforced or shored-up.
  Road damage starts when buses and other heavy vehicles over a certain weight threshold cause the roadbed to flex and crack.
2. 1.2
  another term for trackbed
  Example sentencesExamples
  The men who built this railway had to hang suspended by ropes from vertical cliffs, blasting and hacking out a roadbed.
  This marker also stands on the abandoned roadbed of the St. Paul and Southern Railway.

Definition of roadbed in US English:

roadbed

nounˈroʊdbɛdˈrōdbed

1The material laid down to form a road.
道砟；路床
Example sentencesExamples
- Culverts - metal, plastic or concrete pipes installed under roadbeds to channel runoff - are not always the best solution for drainage, but they are common and sometimes necessary.
- A minority of these roads, although listed with a carriageway of constant thickness, may have had a similar surface profile, provided the roadbed on which they were formed had a central camber.
- Add such attachments as scarifiers, and graders can even tear up old roadbeds.
- Concrete from the demolition of the site's previous buildings was reused in roadbeds.
- Extant contracts do not give information about the profile of the roadbed except that it was not to be below the level of the adjacent ground.
- They begin beneath the roadbed where subsurface water meets the advancing frost line and forms a layer of ice, called a lens.
1. 1.1North American The part of a road on which vehicles travel.
  〈北美〉车行道
  Example sentencesExamples
  Shade helps protect the road from drying out in times of low precipitation; roots stabilize the roadbed.
  Repairs are now underway on the roadbed where the pipe burst.
  Petroleum emulsions work for dust suppression, particularly on dirt roadbeds and shoulders in arid areas.
  Because the melted water cannot drain into the frozen subsoil, the upper lifts of a roadbed become saturated and the road's load bearing capacity is greatly reduced.
  The roadbed looked like it was made from rectangular white building stones, grouted together carefully, that had been grossly discolored.
  Officials said that three storms in the last two months collapsed roads and destroyed roadbeds in the park.
  These carefully concealed elevators, built within the highway tunnels located in Portland's West Hills, will have the capacity to lift both vehicles and helicopters to the highway roadbed.
  On our left, a sheering ledge cut off the roadbed.
  The board said it believes someone crept down to the dusty roadbed after the last vehicle went by and dug in a mine to catch the next passing vehicle.
  Sections of the roadbed where erosion and poor landscaping along steep grades create a safety concern will also be reinforced or shored-up.
  As the water drops, submerged trees, rocks, even old roadbeds break the surface or, worse, lurk just below it, waiting to bust a prop or bend a shaft.
  The total area of land being acquired is 141.26 Ha, consisting of 122.42 Ha agricultural land, 10.32 Ha forestry and 8.52 Ha of roadbed.
  Road damage starts when buses and other heavy vehicles over a certain weight threshold cause the roadbed to flex and crack.
2. 1.2 The foundation structure on which railroad tracks are laid.
  Example sentencesExamples
  This marker also stands on the abandoned roadbed of the St. Paul and Southern Railway.
  The men who built this railway had to hang suspended by ropes from vertical cliffs, blasting and hacking out a roadbed.

词汇	roadbed
释义	Definition of roadbed in English: roadbed nounˈrəʊdbɛdˈroʊdbɛd 1The material laid down to form a road. 道砟；路床 Example sentencesExamples They begin beneath the roadbed where subsurface water meets the advancing frost line and forms a layer of ice, called a lens. Extant contracts do not give information about the profile of the roadbed except that it was not to be below the level of the adjacent ground. Culverts - metal, plastic or concrete pipes installed under roadbeds to channel runoff - are not always the best solution for drainage, but they are common and sometimes necessary. Add such attachments as scarifiers, and graders can even tear up old roadbeds. A minority of these roads, although listed with a carriageway of constant thickness, may have had a similar surface profile, provided the roadbed on which they were formed had a central camber. Concrete from the demolition of the site's previous buildings was reused in roadbeds. 1.1North American The part of a road on which vehicles travel. 〈北美〉车行道 Example sentencesExamples Officials said that three storms in the last two months collapsed roads and destroyed roadbeds in the park. Repairs are now underway on the roadbed where the pipe burst. The roadbed looked like it was made from rectangular white building stones, grouted together carefully, that had been grossly discolored. The total area of land being acquired is 141.26 Ha, consisting of 122.42 Ha agricultural land, 10.32 Ha forestry and 8.52 Ha of roadbed. Shade helps protect the road from drying out in times of low precipitation; roots stabilize the roadbed. As the water drops, submerged trees, rocks, even old roadbeds break the surface or, worse, lurk just below it, waiting to bust a prop or bend a shaft. The board said it believes someone crept down to the dusty roadbed after the last vehicle went by and dug in a mine to catch the next passing vehicle. Petroleum emulsions work for dust suppression, particularly on dirt roadbeds and shoulders in arid areas. Because the melted water cannot drain into the frozen subsoil, the upper lifts of a roadbed become saturated and the road's load bearing capacity is greatly reduced. These carefully concealed elevators, built within the highway tunnels located in Portland's West Hills, will have the capacity to lift both vehicles and helicopters to the highway roadbed. On our left, a sheering ledge cut off the roadbed. Sections of the roadbed where erosion and poor landscaping along steep grades create a safety concern will also be reinforced or shored-up. Road damage starts when buses and other heavy vehicles over a certain weight threshold cause the roadbed to flex and crack. 1.2 another term for trackbed Example sentencesExamples The men who built this railway had to hang suspended by ropes from vertical cliffs, blasting and hacking out a roadbed. This marker also stands on the abandoned roadbed of the St. Paul and Southern Railway. Definition of roadbed in US English: roadbed nounˈroʊdbɛdˈrōdbed 1The material laid down to form a road. 道砟；路床 Example sentencesExamples Culverts - metal, plastic or concrete pipes installed under roadbeds to channel runoff - are not always the best solution for drainage, but they are common and sometimes necessary. A minority of these roads, although listed with a carriageway of constant thickness, may have had a similar surface profile, provided the roadbed on which they were formed had a central camber. Add such attachments as scarifiers, and graders can even tear up old roadbeds. Concrete from the demolition of the site's previous buildings was reused in roadbeds. Extant contracts do not give information about the profile of the roadbed except that it was not to be below the level of the adjacent ground. They begin beneath the roadbed where subsurface water meets the advancing frost line and forms a layer of ice, called a lens. 1.1North American The part of a road on which vehicles travel. 〈北美〉车行道 Example sentencesExamples Shade helps protect the road from drying out in times of low precipitation; roots stabilize the roadbed. Repairs are now underway on the roadbed where the pipe burst. Petroleum emulsions work for dust suppression, particularly on dirt roadbeds and shoulders in arid areas. Because the melted water cannot drain into the frozen subsoil, the upper lifts of a roadbed become saturated and the road's load bearing capacity is greatly reduced. The roadbed looked like it was made from rectangular white building stones, grouted together carefully, that had been grossly discolored. Officials said that three storms in the last two months collapsed roads and destroyed roadbeds in the park. These carefully concealed elevators, built within the highway tunnels located in Portland's West Hills, will have the capacity to lift both vehicles and helicopters to the highway roadbed. On our left, a sheering ledge cut off the roadbed. The board said it believes someone crept down to the dusty roadbed after the last vehicle went by and dug in a mine to catch the next passing vehicle. Sections of the roadbed where erosion and poor landscaping along steep grades create a safety concern will also be reinforced or shored-up. As the water drops, submerged trees, rocks, even old roadbeds break the surface or, worse, lurk just below it, waiting to bust a prop or bend a shaft. The total area of land being acquired is 141.26 Ha, consisting of 122.42 Ha agricultural land, 10.32 Ha forestry and 8.52 Ha of roadbed. Road damage starts when buses and other heavy vehicles over a certain weight threshold cause the roadbed to flex and crack. 1.2 The foundation structure on which railroad tracks are laid. Example sentencesExamples This marker also stands on the abandoned roadbed of the St. Paul and Southern Railway. The men who built this railway had to hang suspended by ropes from vertical cliffs, blasting and hacking out a roadbed.
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