英语词汇“closed book”的释义、用法及例句-英汉词典

词汇	closed book
释义	closed book <<名词>> 1 无法理解的事物; 来历不明的人物 2 已决定的事情, 已确定的事情
随便看	signal box signaler signalize signaller signally signalman signal tower signatory signature signature loan signboard signed signer signet signet ring significance significant significantly signification significative signify sign language sign manual sign-off signor

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