吃一堑，长一智（吃一塹，長一智）
◎ 吃一堑，长一智 chī yī qiàn,zhǎng yī zhì
[a fall into the pit,a gain in your wit] 吃一次亏,长一分智慧。指受了挫败之后,记取教训,以后就变得聪明起来