cry over spilled milk

　　　　　　为打翻的牛奶流泪, 做无益的后悔

　例句：

　　　 I know that you have lost your purse, but since it had
　　　　happened, let it go, please don't cry over spilled milk.


　　　　　我知道你丢了钱夹，不过既然这件事已经发生了，就让它去，不要
　　　　为打翻的牛奶流泪。