harp on
柯林斯词典
1. PHRASAL VERB If you say that someone harps on a subject, or harps on about it, you mean that they keep on talking about it in a way that other people find annoying. 唠叨
Jones harps on this theme more than on any other. 琼斯在这个主题上比在其他任何主题上絮叨得多。
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