路基的英文：
bed
roadbed
subgrade

參考例句：
  • Sub-grader;sub-base grader
    路基整平機(jī)
  • Coarse gravel or crushed rock laid to form a bed for roads or railroads.
    道碴用來鋪公路或鐵路路基的粗砂礫或碎石。
  • A foundation of crushed rock or a similar substance for a road or railroad.
    路基碎石或類似物質(zhì)做的道路或鐵路的基礎(chǔ)。
  • construction of roadway
    路基土石方施工
  • The earthquake made the roadbed cave in.
    地震后路基沉陷了 。
  • The earthquake made the roadbed cave in
    地震后路基沉陷了。
  • scrooge later became Tiny Tim's benefactor
    斯克路基后來成了蒂尼?蒂姆的保護(hù)人。
  • The steamroller leveled out the gravel roadbed and than the concrete was poured.
    蒸汽輾壓機(jī)先把路基的沙礫輾平，然后才倒下水泥。
  • Road bed is the subgrade on which are laid the ballast, ties and rails.
    路基就是上面鋪著道渣，枕軌和鋼軌的底基。
  • Erosion of a relatively soft surface,such as a roadbed,by a sudden gush of water,as from a downpour or floods.
    沖刷相對松軟表面的沖刷，如路基被源于暴雨或洪水的水流沖刷
bed是什么意思：
n. 床，睡眠處；睡覺；（海、河、湖等的）底部；苗床
v. 把...安置在；為…提供住宿（床位）；睡，臥
  • Procrustean bed
    逼人就范之物
  • Bed rest is more like bed agony.
    上床睡覺好象是種苦惱。
  • It has bedded into the deepest crevices of the store.
    它已鉆進(jìn)了店里最隱避的隙縫。
roadbed是什么意思：
n. 路基
  • The earthquake made the roadbed cave in.
    地震后路基沉陷了 。
  • To cover or surface(a roadbed, for example) with broken stones.
    用碎石來鋪設(shè)（如公路）的表面。
  • The steamroller leveled out the gravel roadbed and then the concrete was poured.
    蒸汽壓路機(jī)把石子路床壓平;然后注上水泥。
subgrade是什么意思：
地基; 路基
  • Road bed is the subgrade on which are laid the ballast, ties and rails.
    路基就是上面鋪著道渣，枕軌和鋼軌的底基。

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