closed book
复数形式
closed books
1
封闭的书, 谜
someone or something one knows very little or nothing about
The idiom "closed book" is believed to have originated in the 19th century. It is thought to have come from the literal meaning of a closed book, which is a book that is not open and cannot be read. The phrase "closed book" came to be used to describe someone or something that one knows very little or nothing about. It suggests that the person or thing in question is a mystery to the speaker.
- The workings of the stock market are a closed book to me – I don't understand how it works.
股票市场的运作对我来说是一本封闭的书——我不明白它是如何运作的。
- The new technology is a closed book to most people – they're not familiar with it yet.
这项新技术对大多数人来说是一本封闭的书——他们还不熟悉它。
- My new neighbor is a closed book to me – I don't know anything about them.
我的新邻居对我来说是一本合上的书——我对他们一无所知。
- The mysterious stranger was a closed book to everyone in the village – no one knew who he was or where he came from.
神秘的陌生人对村里的每个人来说都是一本封闭的书——没有人知道他是谁或来自哪里。
- The reclusive scientist was a closed book to his colleagues – he rarely interacted with them and never shared his work.
这位隐居的科学家对他的同事来说是一本合上的书——他很少与他们互动，也从不分享他的工作。