条目狗改不了吃屎
解释喻本性难改。-----------------国语辞典狗改不了吃屎gǒu gǎi bù liǎo chī shǐㄍㄡˇ ㄍㄞˇ ㄅㄨˋ ㄌㄧㄠˇ ㄔ ㄕˇ (谚语)比喻恶习不改,劣性难移。如:「他这个人没救了!真是狗改不了吃屎!」
英语 lit. a dog can't stop himself from eating shit (idiom), fig. bad habits are hard to change
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