未雨绸缪

段永平 · 2012-11-17 08:01:26 · 网易博客

原文：http://nteswjq.blog.163.com/blog/static/1269981201210178126464/

“I violated the Noah rule: Predicting rain doesn’t count; building arks does.”

Attogear QuickQuote Apps for iPhone/iPod Touch - http://www.attogear.com 发自我的 iPhone

所以不能用margin。