This part of the underground tunnel leads to the sea.
地下隧道的这部分通向大海。
The prisoner escaped by digging an underground tunnel.
囚犯挖了一条地道逃跑了。
A life-sized underground tunnel (117 m long) built for shooting.
被建造用于影片拍摄的一节与实物大小相同的地下隧道（117米长）。
The prisoner escaped by digging an underground tunnel.
囚犯挖了一条地道逃窜了。
The Chicago River flooded the city's underground tunnel system...
芝加哥河的河水淹没了城市的地下隧道系统。
Underground tunnel support of soft expansion rock is a main difficulty in mine construction currently.
松软臌胀岩层的井下巷道支护是目前矿山建设中的一个主要难点。
Underground tunnel support of soft expansion rock is a main difficulty in mine construction currently.
松软臌胀岩层的井下巷道支护是目前矿山建设中的一个主要难点。
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