马里兰是很厉害的地方。一处是马里兰，一处是宾州州立，数学系被俄国人占领了。

来源: 蒋闻铭于 2026-02-05 18:38:24 [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.