中华文明发展到君主制顶峰的清朝，在科技上少有建树，显然落伍了。

来源: weed123 于 2023-03-11 11:07:34 [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.