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“心事重重”，汉语成语，意思是心里挂着很多沉重的顾虑。可以翻译为“be gloomy with worry，be preoccupied with anxiety或be weighed down with care”等。
例句：
他心事重重，没注意到有什么不对。He was too preoccupied with his own thoughts to notice anything wrong.
他这阵子心事重重。
He’s got a lot on his mind at the moment.