N the material used to make a road 路基材料
Boats could carry heavy weights, but canals could not cross hilly terrain; turnpikes could cross the hills, but the roadbeds could not stand up under great weights.
船可以运载重物，但运河不能穿越丘陵地带；高速公路可以翻山越岭，但路基承受不了巨大的重量。
The whole roadbeds slipped away.
整个路基都坍掉了。
The paper introduces the types and definitions of the common damages to roadbeds and probes into factors affecting their stability.
文章介绍了路基常见的病害的种类及定义，探讨了影响路基稳定性的各种因素。
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