black tie
noun [ U ] uk/ˌblæk ˈtaɪ/ us/ˌblæk ˈtaɪ/
(晚礼服佩戴的)黑领结;礼服
clothes, including for men a black bow tie, worn for very formal social occasions
Do we need to wear black tie? 我们需要穿正式宴会小礼服吗?
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