记得有本科幻小说就是这样的:来个地道,用重力带你下去,用动能走出来。
回答: YES, DIR THROUH CENTER OF DIQIU...回复:第一张图我觉得是箭头,箭头指向下,到中国最近的路是地下
由 tianfangye
于 2012-03-15 06:12:40
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