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以上来源于: WordNet
N the material used to make a road 路基材料
subgrade , carriage-way
词根： roadway
roadway 道路；路面；车行道；铁路的路基
The earthquake made the roadbed cave in.
地震后路基沉陷了。
《新英汉大辞典》
The application of dynamic consolidation in roadbed engineering is analyzed.
分析了强夯在路基工程中的应用。
youdao
Climbing quickly down a steel ladder, he paused at the bottom, two feet above the roadbed flashing by.
他疾速攀下铁梯，停在梯子最后—级上，离他脚下飞速掠过的铁路路基有两英尺。
Only the roadbed and the skeletons of the trestles that once crossed streams and mudflats remain.
NPR: Environmentalist John Francis, Walking the Walk
Because a structural spine runs under the middle of the roadbed, the designers could attach the cable fans to the spine in a single row, rather than securing a double set of cables to beams at either edge of the road.
WSJ: A Concrete Ribbon Through the Clouds | Millau Viaduct | Masterpiece by Joseph Giovannini
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