The collapse of the Soviet Union and the breakup of Yugoslavia in the nineteen nineties challenged NATO's traditional position as a defensive alliance.

VOA: special.2009.04.04

Well, this view, this evolutionary view, or evolutionary model, was challenged by man a named Yehezkel Kaufmann in the 1930's.

这个改进了的观点，或者说改进了的模型，在20世纪30年代受到了来自考夫曼的质疑。

耶鲁公开课 - 旧约导论课程节选

and that really challenged me to find other ways to assess their pain or what they needed.

我不得不用其它的办法，来评定他们的伤痛或他们需要的治疗。

在医院工作 - SpeakingMax英语口语达人

But the statute is being challenged by the Kurdistan Workers Party in Turkey and the Tamil Tigers in Sri Lanka.

VOA: standard.2009.10.01

But this is where for lack of a better term non-western countries really formally challenged at the highest levels and the lowest, too.

之所以这么说，是因为找不到更好的表达方式了,这表明非西方国家,从最高层面和最低层面都提出了挑战。

普林斯顿公开课 - 人性课程节选

The president invited about and challenged them to help him find ways to put millions of Americans back to work.

VOA: standard.2009.12.04

Toward the end of the discussion just now Victoria challenged the premise of this line of reasoning that's libertarian logic.

刚才，就在讨论即将结束之前,维多利亚质疑了,自由主义逻辑推理的前提。

耶鲁公开课 - 公正课程节选

In his speech on Thursday, President Obama challenged those lawmakers who are campaigning to undo his signature domestic issue.

VOA: standard.2010.03.25

Now, that hypothesis, that thesis, that assumption, could be challenged.

这个假设，是可以辩驳的。

耶鲁公开课 - 死亡课程节选

All who organized and fomented [that unrest and played the game of our enemies must be challenged and confronted,he charged.

VOA: standard.2009.08.28

Well recall from week zero when we took a very real world phonebook and then just last week we had our volunteer come up with the array of pieces of paper on the board and when I challenged myself and when I challenged our volunteer to find me the number 50 both he and I were able 50 to leverage one assumption.

大家回忆一下,当我们拿着一个现实世界的电话簿,就在上周我们的志愿者,在黑板上提出了纸片的阵列,我挑战自己，也挑战志愿者,要找出同一个,数字。

哈佛公开课 - 计算机科学课程节选

But SWAPO has been challenged by the emergence of a new party, the Rally for Democracy and Progress.

VOA: standard.2009.11.28

So the question for us remains, which deeply challenged readers in Hobbes' own time, what makes Hobbes' story, as I am calling it, his story about the state of nature ? being a condition of war, what makes it plausible?

所以我们的问题依然存在，这使霍布斯时代的读者感到深深的挑战，是什么使得霍布斯的故事，关于自然状态的故事,战争状态的故事，是什么使它真实合理？

耶鲁公开课 - 政治哲学导论课程节选

(Sound) On the program itself, Griffin was constantly challenged, as in this exchange, where he tries to explain his stance on immigration.

VOA: standard.2009.10.23

So, you'd have a whole bunch of people selling securities down there and they could vacate quickly if the authorities challenged you.

接下来,你雇了一群人,在这间地下室里帮你出售证券,如果政府想要发难,他们可以快速撤离

耶鲁公开课 - 金融市场课程节选

But some politicians say this legacy is being challenged, amid proposals to change the 1987 Constitution to allow a parliament system of government.

VOA: standard.2009.08.03

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

The lead plaintiff in the Chicago case,Otis McDonald, challenged the law after he said criminals broke into his home and made repeated threats.

VOA: standard.2010.06.29

To so many readers it has seemed that Eve is actually quoting Milton's much earlier writing, Areopagitica, in her defense, and it has an incredibly unsettling effect. Evil has to be challenged.

对于很多读者，这似乎是夏娃引用弥尔顿,早期的作品《论出版自由》为自己辩护，这又造成了极大的混乱的影响，恶在这里被挑战了。

耶鲁公开课 - 弥尔顿课程节选

Earlier this year, the president challenged the private sector to join with government in a nationwide effort to boost student achievement in science and mathematics.

VOA: standard.2009.11.24

I actually came to UCLA as a Psychology major, but I wasn't being challenged,

其实我刚上UCLA的时候主修心理学，但是觉得没挑战，

什么是认知科学？ - SpeakingMax英语口语达人

Opposition leaders Mir Hussein Mousavi, Mehdi Karroubi and former president Mohammed Khatami have all challenged Mr.Ahmadinejad's legitimacy, arguing that he won re-election through fraud and vote-rigging.

VOA: standard.2009.08.28

And it's that picture of the universe, Kaufman wants to argue, that is challenged by the monotheistic revolution. Again he sees this as a revolution of ancient Israel.

考夫曼提出，正是这个宇宙的大致框架，受到了来自一神论革命的挑战，在考夫曼看来,这是古以色列的一次革命。

耶鲁公开课 - 旧约导论课程节选

He has challenged the administration's commitment to fighting terror in numerous speeches and interviews.

VOA: standard.2010.02.14

Now, these comments, frankly, are brain-damaged, or computationally challenged if you prefer.

现在，这些注释，实在点说，没什么用，或者说是对计算有挑战的,如果你喜欢这么说的话。

麻省理工公开课 - 计算机科学及编程导论课程节选

That view is challenged by Georgia State University professor Jennifer McCoy, who also serves as director of the Americas Program at the Carter Center in Atlanta.

VOA: standard.2009.07.03

You don't," she challenged.

你不能，“她说道。

耶鲁公开课 - 现代诗歌课程节选

"But a baby who has a defect in those brain stem circuits that use serotonin can't do that when challenged and they go on to die."

VOA: standard.2010.02.08

These results are surprising and disturbing and I said there is work to be done at an individual and group level and this young man challenged me to be more explicit about that.

这些结果都出乎意料，而且让人不安,我说过个人和群体都要下功夫,这位同学要我明确地说怎样下功夫。

耶鲁公开课 - 心理学导论课程节选

When you think about your career, like a moment where you were particularly proud, or a moment where you were particularly challenged by something, and realized that makes me think in a wholly different way.

您在回顾您的工作时，比如说某一时刻您十分自豪，或者说您的观点受到了挑战,让您用一种,全新的角度来思考。

普林斯顿公开课 - 人性课程节选