It was a rather difficult question.

这是个相当难的问题。

《牛津词典》

It was rather a difficult question.

这真是个难题。

《牛津词典》

They tried to catch her out with a difficult question.

他们试图用一道难题难倒她。

《牛津词典》

He said later that he did so because he was finding it difficult to bring up the question of surrender.

VOA: special.2009.12.24

Now, that's actually a difficult question to ask-- to answer for a child, but I tried my best to give him an answer.

向一个孩子解释这个问题其实挺困难的，但我还是尽力给了他一个答案。

耶鲁公开课 - 心理学导论课程节选

Perhaps, there is a difficult question that you want to ask somebody.

假如你有一个比较困难的问题想询问其他人。

I want to 课堂 - SpeakingMax英语口语达人

One student asked me what I consider the most difficult question in all of personal finance.

FORBES: Financial Education for Fifth Graders

No, this is an extremely difficult question so take your time thinking about it.

FORBES: Job Interview Questions: How to Answer a Difficult One

Ms. DANNELS: Sir, I think that's a very difficult question to ask a career person.

NPR: FEMA Paid $1.5 Billion in False Aid, Report Says