"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

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

(OMITTED) He recently spoke at a conference on the challenges of diagnosing cancer in Nigeria -- a meeting he helped organize.

VOA: standard.2010.06.16

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

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

There are really two purposes in us doing this: one was so you can get a fix on your own eating, and second you can see the challenges that are involved in assessing what people eat when you start doing studies linking diet to health.

这么做实际上有两个目的,一是你可以调整你自己的饮食,二是当你开始研究,饮食与健康的关系时,你会发现,在对人们吃什么进行评估时存在很多困难

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

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

So I've got one more piece of bad code on this point and this is buggy five dot c. So as a comment on top bug of this file challenges, what is, in fact, the bug.

所以我在这里得到了一块很烂的代码,这个是buggy5，c，所以作为这个文件顶端的注释,那实际上是那个。

哈佛公开课 - 计算机科学课程节选

we've got seven or eight big problems." And as he took on those challenges, a presidential style emerged.

VOA: standard.2010.01.16

"The preparations for the second round going on,". "Until now,we don't have any specific difficulties or challenges, and we are going to go ahead."

VOA: standard.2009.10.24

We have corporate challenges where everybody who has signed up gets put on a team at random, so you get to meet new people and try and succeed.

VOA: standard.2010.07.16

"President Obama embodies the new spirit of dialogue and engagement on the world's biggest problems: climate change, nuclear disarmament and a wide range of peace and security challenges,".

VOA: standard.2009.10.09

"Over the 90 percent of the more than 3,000 polling stations, fixed and mobile,countrywide opened on time this morning and no logistical problems or challenges worth mentioning were experienced,".

VOA: standard.2009.11.28

Inspite of several ground breaking studies on autism, there is no single treatment or cure, although experts say certain therapies and educational approaches reduce the challenges associated with the condition.

VOA: standard.2010.03.23

President Obama is said to have stated that, while the past must be understood, he is not there to argue history - and that it is time to "move on" to confront today's challenges.

VOA: standard.2009.04.18

President Obama says the Summit of the Americas yielded broad hemispheric agreement on the need to spur economic growth, confront security challenges like drug trafficking, promote alternative fuels, protect the environment, and ensure human rights.

VOA: standard.2009.04.19

On the the 40th anniversary of Earth Day, this warming planet we live on is posing serious new challenges to human civilization: increasingly severe droughts, floods,and storms across the globe, and slowly rising ocean levels.

VOA: standard.2010.04.21

"And,in south Sudan it is getting worse. In DRC, the Democratic Republic of Congo, we are well familiar with challenges in the eastern part of the country, where we still have thousands and thousands of people on the move.

VOA: standard.2010.02.04

"We have been tasked by our respective presidents the foreign minister and I, to put meat on the bones, so to speak, to get to work to make sure that the expectations of both President Zuma and President Obama are met as we work more closely together on our bi-lateral relationship as well as on regional and global challenges.

VOA: standard.2009.08.08

Dr.Sagir Ahmed of Aminu Kano Teaching Hospital in Kano was one of the organizers and speakers at a conference on the challenges of diagnosing cancer in Nigeria: is the WHO says that 70% of the new cancers that will be seen in the future are going to be affecting individuals in the developing nations -- the so-called poorer segments of the world.

VOA: standard.2010.06.16