COMB in N-COUNT (用于某一字母后，礼貌或幽默地指以该字母开头的单词，以免冒犯或尴尬)表示“…字头的单词” You can use -word after a letter of the alphabet to refer politely or humorously to a word beginning with that letter which people find offensive or are embarrassed to use. (用于某一字母后，礼貌或幽默地指以该字母开头的单词，以免冒犯或尴尬)表示“…字头的单词”
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It was the first show to use the F-word and show nudity on stage.
这是第一个使用F字头词并且裸体上台的演出。
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Politicians began to use the dreaded R-word: recession.
政客们开始使用令人恐惧的R字头词：recession（经济衰退）。