5, 6 个光小时

来源: 433832795028 于 2011-02-24 08:44:31 [旧帖] [给我悄悄话] 本文已被阅读：次

太阳系内用不到光年

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