郑和在船上种菜,船员不会得坏血病. 这个领先西方

来源: weston 于 2014-08-05 07:18:05 [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.