a closed book

常见例句

双语例句

• Fishing is a closed book to me.
  我对钓鱼是一窍不通。
• The actress' life is a closed book to us.
  那个女演员的生活对我们来说是个秘密。
• Paul Newman officially announced his retirement from acting in 2007 - "It's pretty much a closed book for me, " he said.
  2007年，保罗纽曼正式宣布息影——“对我来说，这本书已经合上了”，他说。

原声例句

• And other classes are completely closed book. You can't bring anything into it, even a calculator, so.
  而有些课的考试是完全闭卷考试。考试时什么都不能带，甚至计算器都不行。
  考试应该这么准备 - SpeakingMax英语口语达人

权威例句

• Who can possibly remain a closed book, when others try to open it and leaf through?
  NEWYORKER: Hack Work
• But diplomats and other foreign observers admit that the army is a closed book to outsiders.
  ECONOMIST: By-elections in Myanmar
• This election may have closed the book on a Vietnam veteran ever being elected president.
  FORBES: Magazine Article
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