closed book
英
美
- n.不为人知的人或事；无法解释的事物
详细释义
Noun:
-
something that baffles understanding and cannot be explained;
"how it got out is a mystery"
"it remains one of nature's secrets"
双语例句
- Fishing is a closed book to me.
我对钓鱼是一窍不通。 - Nuclear physics is a closed book to me.
核物理学是我完全不懂的一门学科。 - 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。
用法讲解
- a closed book 未揭开的秘密,高深莫...
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