"Today I say to you that the challenges we face are real, they are serious and they are many.

VOA: special.2010.01.23

What are some of the particular opportunities and challenges of being a Muslim chaplain in America on a secular university campus?

美国大学中的穆斯林教士,一般都会遇到一些,什么样的机会和挑战呢？

普林斯顿公开课 - 人性课程节选

Something that also stimulates your brain. So you just don't focus on small things or small challenges.

一些会激发你的大脑的东西。所以你就不会关注小事情或小挑战了。

学外语的时候 - SpeakingMax英语口语达人

Those challenges included an economic downturn, wars in Afghanistan and Iraq and a promise to reform the health care system.

VOA: special.2010.01.23

Science is very hostile to innovation when it challenges existing theory, sort of like management, the same thing.

科学对创新是有敌意的,当创新在挑战已存在的理论，跟管理一样，同样的道理。

麻省理工公开课 - 固态化学导论课程节选

He promised that the government will meet what he called "the huge challenges ahead of us."

VOA: special.2010.05.22

I think what part of Sustain Dialogue does and just being in community with people it also challenges you. -It does.

我觉得，“持续对话“所做的部分活动,和与你不同的人在一起交流,这很有挑战性，-的确。

普林斯顿公开课 - 人性课程节选

"One of the challenges we have is to make the Web a lot easier to use even on the simplest and least expensive mobile phones."

VOA: special.2010.11.08

And that created enormous challenges, of our capability and systems and process to deal with this tremendous growth and expansion.

这也为我们带来了极大地挑战，公司的能力和机制与,快速的成长和扩张不符。

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选

She wants children to know that "their challenges may also become a gift."

VOA: special.2009.07.31

Now there are challenges to a plant based diet which made eating meat important to humans in human history.

在人类历史上,以素食为主的饮食方式面临各种挑战,使得进食肉类变得重要

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So someone returning from mass displacement, even though I'm sure are thrilled to be going home, they bring with them all sorts of challenges upon their return."

VOA: special.2011.07.06

It's a material force that his rhetoric challenges and relies on, gives him a means of getting off the ground, and a means of always getting back to it, too.

这是他的修辞所挑战的并且依赖的物质力量，这种力量给他离开地面的方法，也给他回到地面的方法。

耶鲁公开课 - 现代诗歌课程节选

"Some of our projects have looked at what we call situational impairments, which are challenges to accessibility that are caused more by the situation or context that the computer user is in instead of maybe as we usually think of accessibility as having to do with someone's own physical or cognitive state."

VOA: special.2011.04.18

And we've had our successes and we certainly have had our challenges.

我们已经获得了成功，当然也有挑战。

斯坦福公开课 - 微软CEO-Steve.Ballmer谈科技的未来课程节选

While East Timor faces many challenges, U.N.Special Representative Khare says it is on the path to becoming a vibrant democracy.

VOA: standard.2009.08.27

The challenges presented by freedom and the predominance of reason cannot be ignored, nor can they be met by recourse to the experience of other cultures where these characteristics have not been prominent.

自由的现存挑战,和理性的卓越优势不能够被忽略,同时也不能因为他们的典型性,一时不够显著,而诉求于其他的文明

耶鲁公开课 - 古希腊历史简介课程节选

But President Obama recognized that, for the most part, Republican opposition remains one of the biggest challenges to his plans.

VOA: standard.2009.10.10

In fact, we'll talk about that concept throughout the course because one of the big challenges of making these sort of new biological therapies work in people to treat diseases is getting the right molecules into the right cells, at the right period of time.

实际上,我们会讲到一个,贯穿这门课程的概念,因为为了治疗疾病,而采用的新型生物学疗法,所面临的一个大问题就是,如何将正确的分子在适当的时候,转进正确的细胞当中

耶鲁公开课 - 生物医学工程探索课程节选

One of the greatest challenges will be making enough trained teachers and facilities available in state-run schools, especially in rural areas.

VOA: standard.2010.04.01

I'll then pose some of the questions and the challenges we are facing in the area of access in sustainability.

随后我将提出,在获取稳定这方面,我们所面临的问题和挑战。

麻省理工公开课 - 媒体、教育、市场课程节选

Added to the mix of challenges facing the new U.S.and NATO commander are the dynamics of Afghanistan's August presidential election.

VOA: standard.2009.06.15

Problem Set One will be posted on the course's website tonight by 7:00 p.m. It will very clearly walk you through the week's challenges.

习题集1今晚7：00，将在课程的网站上贴出来,它将非常清晰地带领你们,通过这个星期的挑战。

哈佛公开课 - 计算机科学课程节选

The president used the opportunity to reflect on the challenges that he has faced in his first year in office.

VOA: standard.2010.01.17

It's actually not impossible, but hard, and there are a number of challenges.

事实上，它并非不可能，只是很艰难，要面对很多挑战。

耶鲁公开课 - 金融市场课程节选

Bevis says the winter lodge is no more. Children are spread out in their own homes facing all kinds of challenges.

VOA: standard.2009.12.11

Their early challenges to Socrates show them to be potential philosophers.

他们早先挑战苏格拉底,展示出他们是潜在的哲学家。

耶鲁公开课 - 政治哲学导论课程节选

But he says there are challenges, including the difficulty in getting the plan approved by the United States Congress.

VOA: standard.2009.12.11

The approach of this course, with all its challenges,is the opposite.

本课程的做法，正好相反。

哈佛公开课 - 幸福课课程节选

The challenges that... First of all, you got to understand that learning a language takes time.

挑战就是，首先，你必须明白学习一门语言是件耗时间的事。

学第二外语的时候 - SpeakingMax英语口语达人