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

But before we dismiss Aristotle's account as insufferably inegalitarian and elitist, we have to ask a difficult question, not just of Aristotle, but more importantly of ourselves.

但在我们驳斥亚里士多德的论点之前,即令人无法忍受的不平等及精英者论点，我们必需要问一个艰难的问题，不只是关于亚里士多德，对我们更是重要。

耶鲁公开课 - 政治哲学导论课程节选

That apparently is a difficult question that most people didn't know in 1974.

这显然是个难题,当时没有什么人知道

耶鲁公开课 - 金融市场课程节选

Okay, that's a difficult question.

这可是个难题。

耶鲁公开课 - 公正课程节选

He says, oh it's a very simple question; it's not difficult to answer.

他答道,这问题太简单了,一点儿都不难回答

耶鲁公开课 - 古希腊历史简介课程节选

In fact there's research-- for example, this was done with internists, doctors, who are giving a very difficult, very difficult question connected to a liver problem that an individual patient had.

实际上有这样一项研究-,在内科医生，医生中间进行，向他们提出一个，与肝脏问题有关的很困难的问题,那是一个病人的病症。

哈佛公开课 - 幸福课课程节选