Demong says that part of the challenge of the ski jump is to get into a good rhythm and stay there.

VOA: standard.2010.01.31

- Part of the challenge is speed, too, how quickly you can get these answers in terms of getting them in on time.

部分困难也会来自于速度，你多快能做出答案,能否在规定的时间做完。

麻省理工公开课 - 化学原理课程节选

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

Unless carbon emissions are brought under control,he says, the challenge of adapting to global climate change will become ever more difficult.

VOA: standard.2010.06.14

And so if you choose to elect the hacker edition of this week's problem set the challenge will be to figure out not only how to implement the game but how to implement a solver for the game.

因此，如果你选择这周的应用题目为升级版,那么你将面临的挑战,不仅是如何实现这个游戏，而且,要实现此游戏的解决方法。

哈佛公开课 - 计算机科学课程节选

The challenge is to pick out oil from other dark spots, such as shadows made by clouds or patches of seaweed.

VOA: standard.2010.07.05

The challenge is for the work you are going to be doing at the class time we are doing to spend together.

这一挑战是针对,我们要一起在课上,完成的任务提出的。

麻省理工公开课 - 媒体、教育、市场课程节选

Edward Damiano, a biomedical engineer at Boston University in Massachusetts, knows firsthand the challenge of managing juvenile diabetes.

VOA: standard.2010.04.15

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

The challenge for designers was to create a vehicle with the protection provided by an MRAP but about 25 per cent lighter.

VOA: standard.2009.11.02

But the challenge is that we really didn't have a business model at that time.

但问题是,那时公司没有一个商业模式。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

"Challenging." But at the science cafs in St.Louis, scientists and non-scientists alike seem up to the challenge.

VOA: standard.2010.05.04

The challenge for you is to figure out: well, what do we do with those novels?

你们的挑战是发掘出，我们应该怎么阅读它？

耶鲁公开课 - 1945年后的美国小说课程节选

Regional diplomats say the challenge for the new president will be forcing Bissau's military to respect civilian leadership and keep out of politics.

VOA: standard.2009.07.26

Of course, the particular problem of Ireland, the challenge of Ireland as I suggested earlier, has an awful lot to do with that.

特别是爱尔兰的问题,我之前提到的,来自爱尔兰的挑战,也与之也有很大关系

耶鲁公开课 - 欧洲文明课程节选

"It is the challenge of the 21st century," "We have to acknowledge, accept and work with it.

VOA: standard.2009.05.13

The challenge is greater because in 2001 we had a fairly easy victory over the Taliban.

说挑战大,那是因为2001年在与塔利班的较量中，我们轻松地获胜。

普林斯顿公开课 - 国际座谈会课程节选

With those legal and regulatory frameworks in place, President Sirleaf says the challenge now is making sure that they continue to be implemented properly.

VOA: standard.2009.08.14

And there's something to be learnt from the challenge of that experience.

而同时从这些挑战中,我也能学到很多东西。

普林斯顿公开课 - 人性课程节选

So we said we will accept the challenge of raising up this program here in Kenya."

VOA: standard.2010.05.30

The challenge will be to get legislation on the table that will back up those numbers.

面临的挑战将是进行支持这一目标的立法。

对全球变暖的政策 - SpeakingMax英语口语达人

Writer-director Richard Linklater believes any moviemaker would be daunted by the challenge of telling the story of the man behind the great American film Citizen Kane;

VOA: standard.2009.12.17

And,of course,the challenge -- so this is the latter part of the course-- is what do you do with this and Europe?

当然,质疑是,这部分会在日后课程提到,即该如何处理这和欧洲各国的关系

耶鲁公开课 - 1871年后的法国课程节选

"This is the challenge we have now: to open a lot of those doors."

VOA: standard.2009.08.15

That is going to be the challenge.

这将成为一项艰巨的任务。

麻省理工公开课 - 固态化学导论课程节选

"We recognize that as we move ahead there are huge challenges ahead of us, particularly the challenge of overcoming the divisions that have occurred in this country.

VOA: standard.2010.05.21

And the challenge is to combine "the permission to be human" to experience the emotion to go through the motion and yet not to enter the downward spiral where six months later, after small incident, I'm still in that rot.

困难在于将之与准许为人相结合“,去体会情绪，实现转移,但不会进入下行螺旋，在发生小小意外六个月后，仍心情低落。

哈佛公开课 - 幸福课课程节选

So the challenge for us as an international community is to try to make sure we're marshaling our resources, our efforts,so that we can do the job and leave.

VOA: standard.2009.03.23

In these parts of the Politics Aristotle offers a serious challenge to existing Greek traditions and patterns of political education.

在这部份的《政治学》,亚里士多德对,当时的希腊政治教育传统与模式,提出严肃的挑战。

耶鲁公开课 - 政治哲学导论课程节选

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