航天飞机最牛, 难度最大. 登月难度最大的是太空服吧可能.

来源: 叶泥泥于 2009-07-24 14:27:11 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.