懲ㄔㄥˊ前ㄑㄧㄢˊ毖ㄅㄧˋ後ㄏㄡˋchéngqián‑bìhòu

简惩前毖后

  1. 警戒從前的過失，使以後謹慎行事，不再犯錯。例 「凡事應懲前毖後，才不會重蹈覆轍」。

英lit. to punish those before to prevent those after (idiom)​; to criticize former mistakes firmly to prevent them happening again
法tirer la leçon des erreurs passées