回复：回复：回复：Lol...

来源: 于 2009-05-03 21:30:27 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次
Indeed , this is a good learning process.Thanks for sharing!

I have learned and I think It mostly used as,

crack someone up

to make someone laugh very hard; to make someone break out laughing.