"分寸 "用英语怎么说?

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你不必担心，他是个知道分寸的人。
　　[误] You can rest assured. He is a man who knows inches and metres.
　　[正] You can rest assured. He is a man who knows his distance.
　　注：“分寸”二字在中文里是指“说话或做事的恰当限度”，它译成英文时不可直译。know one/'s distance 出自莎士比亚的《终成眷属》，而且准确表达了原文的含义。