亡羊補牢 [ㄨㄤˊ ㄧㄤˊ ㄅㄨˇ ㄌㄠˊ; wang2 yang2 bu3 lao2] lit. to mend the pen after sheep are lost (idiom) fig. to act belatedly better late than never to lock the stable door after the horse has bolted ◄ ►
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