- mend the fold after the sheep have been stolen; lock the stable door after the horse has been stolen; mend the fold after a sheep is lost; shut the stable door after the steed has been stolen; The sheep has gone astray and its pen must be mended.
亡羊補牢的用法和樣例：
例句
賊去關門。；亡羊補牢未為晚矣。
Lock the stable door after the horse has been stolen.
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