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来源:雅诚德英语网
But the wall isn't impenetrable. It's riddled with "interstellar tunnels" that lead from one pocket of less dense gas to another.
但是这层气体并不是密不透风,它里面有很多星际“隧道”,把一个个局部空洞区域连起来。
But the wall isn't impenetrable. It's riddled with "interstellar tunnels" that lead from one pocket of less dense gas to another.
但是这层气体并不是密不透风,它里面有很多星际“隧道”,把一个个局部空洞区域连起来。