I relish the challenge of doing jobs that others turn down.

我喜欢接受挑战做别人拒绝做的工作。

《柯林斯英汉双解大词典》

The role will be the biggest challenge of his acting career.

扮演这个角色将是他演艺生涯中最大的挑战。

《牛津词典》

The new Germany must rise to the challenge of its enhanced responsibilities.

新德国必须奋起应对更艰巨的挑战。

《柯林斯英汉双解大词典》

"The biggest challenge of getting life saving vaccines to poor countries is that there's no market.

VOA: special.2010.03.29

Also, shows you something about the challenge of it, because we are susceptible to attack from lots of different kinds of microorganisms.

同样也向你们展示这其中的一些挑战,因为我们也容易受到,各类微生物感染的危害

耶鲁公开课 - 生物医学工程探索课程节选

Realize that there's an inevitably challenge for us and actually helping people in this kind of context, especially as the deadline really approaches.

这对我们来说是一个不可避免的挑战,需要在这种环境下帮助人们，特别是当最后期限要接近了。

哈佛公开课 - 计算机科学课程节选

But respecting the election result, no matter what it is, remains the biggest challenge of all.

ECONOMIST: Turkey and its army

And I've been telling Washington and the Americans that this is the defining challenge of our time.

NPR: A Conversation with Iraq Envoy Zalmay Khalilzad

The challenge of transforming the powder into an aerosol cloud was handed to rocket scientist Carlos Schuler.

FORBES: The Impossible Made Possible