69年登月在面对地球的一面。中国登月在背面，难度更高些

来源: 奔流12959 于 2019-07-20 22:34:41 [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.