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

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

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

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

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

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

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

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

VOA: standard.2009.11.28

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

(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

They are computationally challenged, meaning, at the time they were invented, they were perfectly good sorting algorithms, there are better ones, we're going to see a much better one next time around, but this is a good way to just start thinking about how to do the algorithm, or how to do the sort.

他们是相当棒的排序算法，是有更好的算法，我们下一次,就会看一个更好的，但是开始想想,如何完成算法，或者说是如何排序,是一个好的学习方法,恩，再试试吧,如何来排序呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

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

And the interesting thing is that each one of these premises could be plausibly challenged.

有趣的是,每一个前提似乎都有其合理质疑之处

耶鲁公开课 - 死亡课程节选

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

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

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

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

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

VOA: standard.2010.02.14

And each one of the premises can be challenged.

而这里的每一个前提都可能站不住脚

耶鲁公开课 - 死亡课程节选

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

Last year for the pieces that do vary year to year a bit, last year's first problem set challenged students to write their first or maybe second or third program using this environment called Scratch.

去年的教材有些地方有略微改动，去年的第一个问题集是让学生,在Scratch环境下,写下自己的第一或第二个或第三个程序。

哈佛公开课 - 计算机科学课程节选

But SWAPO is being challenged by a new party,the Rally for Democracy and Progress.

VOA: standard.2009.11.27

It's a tactic, it's not an end in itself, and I think that the only thing TV Marti has challenged is that Congress truly cares about the taxpayer money,".

VOA: standard.2009.06.18

Ridgway says working on the book challenged him intellectually and emotionally.

VOA: standard.2009.10.21

"I think people really like to be challenged when they go to the cinema and you watch it and you want to go back again and take more from it."

VOA: standard.2010.07.16

Those comments echo earlier assessments by analysts here in Seoul, who say Kim Jong Il's apparent stroke about a year ago challenged perceptions of his complete command of the North's government.

VOA: standard.2009.06.22

One of the most closely watched cases involves the rights of gun owners in the city of Chicago, where the city's ban on hand guns is being challenged by 2nd amendment advocates.

VOA: standard.2009.10.01

They are steps that are working." Bernanke says the Federal Reserve and other economic policy makers have been challenged by unprecedented events in the past few years, but his objective has not changed.

VOA: standard.2009.08.25