a closed book的意思|示意
未揭开的秘密；高深莫测的事物
a closed book的用法详解
英语单词a closed book的用法讲解
英文短语a closed book意思是“陌生的概念；非常难理解的东西”。这是一句有着比较深义的谚语，意思是某事物很陌生，非常难以理解，以至于它就像一本闭合的书，无法看到里面的内容。a closed book用在句中，可以强调一个人对某件事情十分陌生，不明白，不懂，不熟悉，也可以用来强调一件事情很难理解，不易掌握。
例句：
1. Physics has always been a closed book to me.
物理对我来说一直是个陌生的学科。
2. This new accounting system is a closed book to me.
这套新的会计体系对我来说完全是个陌生概念。
3. These rules are a closed book to a lot of people. 这些规则对很多人来说非常难以理解。
a closed book相关短语
1、 like a closed book 被迫有趣
2、 to be a closed book 意指无法明了的事
a closed book相关例句
Philosophy is a closed book to me.
我对哲学一窍不通.
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Nuclear physics is a closed book to most of us.
我们大多数人对原子核物理学一窍不通.
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Mathematics is a closed book to me , I'll never understand it.
我对数学一窍不通, 从来都搞不懂.
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For me, geology is a closed book.
对我来说地质学是一门我完全不懂的学科.
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I'm afraid geophysics is rather a closed book to me.
我对地球物理学一窍不通.
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For many people the Bible is a closed book.
大多数人对《圣经》一无所知.
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