He was not afraid of asking difficult questions.

他不怕提出困难的问题。

youdao

Tolstoy spent his whole life trying to answer these difficult questions.

托尔斯泰一生都在试图回答这些难题。

youdao

Mary was afraid that she might begin to ask difficult questions, but she did not.

玛丽担心她可能会问一些难题，但她没有问。

youdao

"We also owe it to every single one of them to ask the difficult questions about what we are doing in Afghanistan.

VOA: standard.2009.10.14

So that's really - these are really difficult questions to answer.

所以这些问题,这些问题都是极难处理的

耶鲁公开课 - 生物医学工程探索课程节选

Especially if you're asking difficult questions, use the "Would you" pattern.

特别是当你提出很困难的问题时，应使用“Would you”句型。

Would you 课堂 - SpeakingMax英语口语达人

As marketers, we will need to answer a lot of difficult questions from executives.

FORBES: 3 Reasons Why There's No Measuring ROI On Social Media

Never have we had to face so many difficult questions about our parents all at once.

FORBES: A new blog for all of us with aging parents

Putting a value on Wales' liquid assets could trigger a deluge of difficult questions.

BBC: Highly politicised liquid assets