difficult problem

nán tí

n+án·2nd tonet+í·2nd tone

Examples4 available

He is good at solving complicated mathematical problems.

他擅长解答数学难题。

Our teacher will give us difficult problems.

我们的老师会给我们出难题。

The challenge we are going to face is how to increase work efficiency.

如何提高工作效率是我们现在要面临的难题。

He's thinking about this difficult problem.

他正在思考这个难题。