英语词汇“a closed book”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	a closed book
释义	a closed book noun : a person or thing that is difficult to understand Even to his closest friends, he was always something of a closed book.
随便看	injectable injectables injectant injectants injected injecting injection injection gneiss injection molding injection well injection-molded injections injective injector injector razor injectors injects injera injoint injucundity injudicial injudicially injudicious injudiciously injudiciousness

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。

a closed book