From a secret underground base scientists try to find a way to fight the aliens.
从一个秘密的地下基地科学家试图找到一种方法打外星人。
This base is completely underground, with barely visible entrances to the surface.
这个基地是完全地下，几乎可见的入口表面。
This method will have broad prospect in deep base pit of underground engineering.
将这一方法用于深基础坑壁支护具有广阔的应用前景。
This method will have broad prospect in deep base pit of underground engineering.
将这一方法用于深基础坑壁支护具有广阔的应用前景。
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