a closed book

 
       
  • 未揭開的秘密,高深莫測的謎

a closed book的用法和樣例:

例句

  1. Fishing is a closed book to me.
    我對釣魚是一竅不通。
  2. Nuclear physics is a closed book to me.
    核物理學是我完全不懂的一門學科。
  3. Nuclear physics is a closed book to most of us.
    我們大多數人對原子核物理學一竅不通。

a closed book的相關資料:

臨近單詞

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