太阳系得直径是2光年。

来源: 用户名被占用了于 2012-01-20 11:00:52 [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.