公元500年的阿拉伯数字也是划时代的。

来源: wwni60 于 2019-08-27 15:38:06 [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.

Change Ad Consent