参考例句

1. The man's early life is a closed book .

   那人的早年生活是个不可告人的谜。

2. 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

3. Talbot slid his closed book into his satchel.

   塔尔博特把他那本阖上的书，轻轻地放进书包。

4. The rest of the members are very friendly but Helen is very much a closed book .

   其他人都很好，唯有海伦简直让人费解。

5. a closed book (to sb);subject about which one knows nothing

   自己一无所知的科目

6. Fishing is a closed book to me.

   我对钓鱼是一窍不通。

7. "He is not interested in the amazing games, only playing on the Internet which was a closed book to him before.

   “他并不是对那些令人目不暇接的游戏感兴趣，只是出于好奇而纯属瞎玩。

8. Closed -book exam

   闭卷

9. Nuclear physics is a closed book to me.

   核物理学是我完全不懂的一门学科。

10. 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.