英语词汇“a closed book”的意思、用法、释义、翻译、读音、例句、短语、词组-英汉翻译词典

单词	a closed book
释义	a closed book [ə kləʊzd buk] freq. 26 dict. 10 spoken 4 un.控告；不可告人的谜 [网络]合上的书；一本合上的书；高深莫测的事物
随便看	broadcast input broadcast interference broadcastion junctional equipment broadcast journalism broadcast journalist broadcast journalists broadcast mail broadcast media broadcast medium broadcast mediums broadcast message broadcast method broadcast mode broadcast model broadcast monitor broadcast multipoint communication broadcast net broadcast network broadcast news broadcast normalization broadcast on broadcast over broadcast packet broadcast pedagogy broadcast program

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