a tough nut to crack
中文釋義
難以解決的問題或挑戰
A difficult problem or challenge that’s hard to solve.
常用搭配
- a tough nut to crack難解的題
- a hard problem to solve棘手難題
- a difficult challenge艱鉅挑戰
例句
- That riddle is a tough nut to crack.那個謎語是個難題。
- This client is a tough nut to crack, but we'll win them over.這個客戶很難搞定，但我們會贏得他們。