That's true. There are 5 people in our office who signed up for

来源: 2012-01-29 12:52:48 [博客] [旧帖] [给我悄悄话] 本文已被阅读:

 

有一帮人有同样的爱好,就有了一种气氛,兴趣也比较容易持续下去。
有些老美练起来很卖力,我算比较保守的 :-)