比欧洲早400多年。可惜不是枪炮，火药，舰船技术。

来源: f2022f 于 2026-02-22 18:13:47 [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.