竟然看到了我的老同学！！！small and smaller world!!! #31

来源: 于 2011-08-12 10:30:26 [旧帖] [给我悄悄话] 本文已被阅读：次

But she will not be able to tell who I am:-)

#31   If you are with a math professor, you are my classmate, :-)