英语词汇“closed book”是什么意思，“closed book”的读音、用法及例句翻译-烛光网

词汇	closed book
释义	closed bookn.（名词） A person or thing that cannot be known or understood; something unfathomable or puzzling.完全不懂的人，不了解的事：无法认识或了解的人或物；深不可测或迷惑不解的东西
随便看	weregild weren't werewolf werewolves Werfel werg- wergeld Werner wernerite wernerites Werner's syndrome Wernicke-Korsakoff syndrome Wernicke's area Wernicke's center Wernicke's convolution Wernicke's encephalopathy Werra wers- werst wert wert Wertmüller werwolf werwolf wes

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