careful and circumspect in one's speech or actions, especially in order to avoid causing offence or to gain an advantage
(言行)谨慎的,慎重的;周到的
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we made some discreet inquiries .我们做了些周详的询问。
intentionally unobtrusive
不显眼的,不引人注意的
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a discreet cough .轻咳。
"Middle English: from Old French