英语词汇a closed book是什么意思，a closed book的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典

单词	a closed book
释义	a closed book　谜, 未揭开的秘密高深莫测的事物
随便看	calcium plumbite calcium polycarbophil calcium potassium ferrocyanide calcium propoxide calcium propylate calcium pump calcium pump calcium pyrophosphate calcium pyrophosphate calcium reduction route calcium resinate calcium rhodanate calcium rosin soap calcium saccharate calcium salicylate calcium santonate calcium selenate calcium selenide calcium selenite calcium serum calcium silicate board with microporous calcium silicide calcium silicofluoride calcium silicon calcium sillicate

英汉汉英翻译词典包含1679246条英汉翻译词条，基本涵盖了全部常用英语单词及常用语的翻译及用法，是英语学习及翻译工作的有利工具。