Her leg had been pinned beneath a heavy concrete slab. Two small cranes had failed to free her.
那个女孩的腿被一块沉重的水泥块压在下面，两台起重机都无能为力。
Small to medium-sized marsh birds similar in body shape by cranes, rails are found throughout the world, except in the polar regions.
体型上跟鹤相似的、小到跟中等体型的沼泽鸟一样，秧鸡可以在除了极点地区的整个世界范围内被找到。
At first, the reason and hazard of rail gnawing in cranes big and small vehicle are analyzed, then the problems are listed when checking rail gnawing and resolutions are put forward.
分析了起重机大、小车运行产生啃轨的原因及其危害，同时列出啃轨时检验注意的问题，提出了解决啃轨的方法。
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