The difficult question tripped us.

这道难题我们答错了。

youdao

The difficult question tasked my brain.

这个难题使我绞尽脑汁。

youdao

The difficult question is how to find that profitable niche and protect it.

这个难题是：如何找到有利可图的利基市场并加以保护。

youdao

The report says Pittsburgh was forced to make many of the difficult decisions that other cities are facing now.

VOA: special.2009.07.13

That's what we did during the difficult times back in year 2000, 2001, 2002.

这就是我们在2000至2002年困难时期,所做的一切。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

And the first year of law school was notorious for being difficult and grinding, you know, it was like that.

法学院的第一年是众所周知的——课程很难，让人难以忍受。

哥伦比亚的氛围 - SpeakingMax英语口语达人

Unless the government takes the difficult steps that it must, Colombia's troubles will deepen.

FORBES: Fact And Comment

But here's the difficult bit for arts administrators: how do the economics stack up?

BBC: App Pompeii - Visiting museums via your phone

Martin Freeman, compact and affable, is a snug fit in the difficult role of Bilbo.

NEWYORKER: Ring Cycle