研究和了解复杂软件系统可能是一项非常具有挑战的任务。

Studying and understanding complex software systems can be a challenging task.

youdao

有些男人认为表现得具有挑战感就可以促使女人来追求他们，但这有点过了。

Some men think acting too challenging with women will make them chase after them. However this is too over rated.

youdao

一旦习惯了阅读这种具有挑战的书，我认为你将一气呵成而不用反复阅读理解了。

Once you get used to reading challenging books, I think you’ll findthat you aren’t tempted to go back to page-turners.

youdao

And I'd like to leave you with a challenging question.

下面我想留给你们,一个具有挑战性的问题。

麻省理工公开课 - 媒体、教育、市场课程节选

It can be very, very challenging.

这非常非常具有挑战性。

伦敦的出租车司机 - SpeakingMax英语口语达人

So my challenge to you, and I know Professor Guttag can do this, my challenge to you is, a year from now, come back and look at code you wrote here.

因此我这里有个具有挑战性的任务，我知道Guttag也可能会说这个任务，我的这个任务就是，一年以后，回头来看,你之前写过的代码。

麻省理工公开课 - 计算机科学及编程导论课程节选