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“有口无心”,汉语成语,意思是嘴上说了,心里可没那样想。指不是有心说的(say what one does not really mean),可以翻译为“be sharp-tongued but not malicious”。
例句:
他是个直来直去的人,说话有口无心。
He's a blunt man, often speaking sharply but meaning no harm.
他这个人有口无心你是了解的。
You know what he is like. He says whatever enters his mind.