人类要寄希望于科学，否则没有希望

来源: 闲情于 2020-03-10 14:03:23 [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.