And the core of a big office building or an underground garage would provide the best shelter of all.
而大型写字楼或地下车库的核心区域则是最佳的掩蔽场所。
While building a tunnel through the mountain, the workers discovered an underground lake.
当工人们在修建一个穿过山的隧道时，他们发现了一个地下湖。
They are building a new shopping mall underground.
他们正在建一个新的地下商场。
Many people believe building an underground city is one way to alleviate the problem.
许多人认为，建造地下城市是减缓该问题严重性的一种方法。
The fire load of underground commercial building is very large and controlling fire is difficult.
同时，地下商业建筑的火灾荷载大，且地下商业建筑的防火救火工作具有相当大的困难。
The Square City is the symbolic building of the Ming Tomb's underground palace.
四方城是明孝陵地下宫城的象征性城楼。
The Square City is the symbolic building of the Ming Tomb's underground palace.
四方城是明孝陵地下宫城的象征性城楼。
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