"To see a neighbor that really was a backwater, an underdeveloped authoritarian country now emerge as a model,as a leader, must be very frustrating."

VOA: standard.2010.07.26

This is another example of off balance sheet accounting that was frustrating the rules of the SEC.

这也是重创证交会,所制定的规范的一个例子

耶鲁公开课 - 金融市场课程节选

So it's frustrating. I think it's a frustrating practice, but it happens a lot.

这很令人沮丧。这种现象让人无奈，但却是很普遍。

不平等的赞助入学 - SpeakingMax英语口语达人

"That is the most frustrating thing about what we are talking about.

VOA: standard.2009.10.14

What was the most frustrating domestic and foreign policy experience that you had?

让你和布什总统以及其他工作人员,有挫败感的政策是什么？

普林斯顿公开课 - 国际座谈会课程节选

It's very frustrating.

VOA: standard.other

And so, when you do a search, it is sometimes frustrating.

当你们搜索的时候，有时会很沮丧。

麻省理工公开课 - 固态化学导论课程节选