"a tough nut to crack" in Chinese (Simplified)

• 难以解决的问题
• 棘手的问题

Definition

很难应对、理解或解决的人或问题。

Usage Notes (Chinese (Simplified))

这个习语是口语，常用于形容难以解决的人或问题。适合非正式场合，不适合正式文档。

Examples

Math is a tough nut to crack for many students.

数学对许多学生来说是**难以解决的问题**。

Fixing the old car was a tough nut to crack.

修理这辆旧车是一个**棘手的问题**。

This puzzle is a tough nut to crack.

这个谜题是**难以解决的问题**。

Convincing her to join us was a tough nut to crack, but we finally did it.

说服她加入我们真是**难以解决的问题**，不过我们终于做到了。

The new security system is a tough nut to crack for hackers.

新的安全系统对黑客来说是**难以攻破的问题**。

When it comes to saving money, he's a tough nut to crack.

在省钱方面，他是个**难以理解的人**。