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

And also for the challenge factor because they challenge the way I was thinking and writing

还有挑战因素，因为他们挑战了我思考和写作的方式，

怎么协调意见冲突 - SpeakingMax英语口语达人

Because it challenged the whole class system, that people are born into a certain place and cannot-- and should not-- be moved.

因为它挑战了整个阶级体系，人生来就有阶级，不能-,也不应该被改变。

哈佛公开课 - 幸福课课程节选

Then, the next challenge was to figure out how to keep the dots on the streets because they were going all over the place.

接下来的挑战是,想办法让这些点固定在,街上，因为,它们总是不停地移动。

斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选

And I think for that reason that religion is maybe the largest challenge to the idea of human rights as it is currently incapsulated in human rights law, both out of the United Nations and also other international bodies and domestic bodies.

基于这一点，我认为宗教可能是,人权观念最大的挑战,因为它现在受到人权法压制，无论是在联合国,还是其他国际国内的组织里都是如此。

普林斯顿公开课 - 人性课程节选

And sometimes had them killed if he had to if he thought that's what he should do, because there wasn't any sort of challenge to his authority.

如果有必要,他甚至会杀掉那些碍事的议员,因为没有什么可以挑战他的权威

耶鲁公开课 - 欧洲文明课程节选

What makes this enterprise difficult but also riveting is that moral and political philosophy is a story and you don't know where the story will lead.

这一过程会充满挑战又引人入胜,因为道德与政治哲学就好比一个故事,你不知道故事将会如何发展。

耶鲁公开课 - 公正课程节选

because school can be really challenging and stressful,

因为学校的学习很有挑战性也很有压力，

百慕大出身 - SpeakingMax英语口语达人

We are living in very unusual times and I am sure that Ben Bernanke and other central bank presidents are losing sleep right now because this is a time to challenge monetary policy makers.

我们现在正生活在一个非常特殊的时期,并且我很肯定本？伯南克,和其他中央银行行长们,正在日夜担忧，因为,现如今是一个挑战货币政策制定者的时代。

耶鲁公开课 - 金融市场课程节选