The U.N.World Food Program says more than a billion people one in six worldwide do not get enough food to be healthy.

VOA: special.2009.11.23

But it grows pretty rapidly, as n goes up, and I'm going to show you an example in a second.

解决问题需要的时间会急剧增长，一会儿我会让大家看个例子的,我想大家注意的还是。

麻省理工公开课 - 计算机科学及编程导论课程节选

n l m s Once we have chosen a certain mix of n, l, m and s, it is used once for that particular atom.

一旦我们选定了一组量子数，它就只能被一个固定原子所有。

麻省理工公开课 - 固态化学导论课程节选

The governments at the U.N.conference also reached a decision on another pesticide,DDT.

VOA: special.2009.06.23

So it looks a lot less messy if we just draw our Lewis structure like this for h c n, where we have h bonded to c triple bonded to n, and then a lone pair on the nitrogen there.

这看起来整洁了不少,如果我们把氰化氢的路易斯结构画成这样的话，这样我们就有氢与碳之间的单键和碳与氮之间三键，然后还有一对孤对电子在氮这里。

麻省理工公开课 - 化学原理课程节选

A U.N.spokesman expressed concern about reports that government shelling has killed civilians.

VOA: special.2009.05.16

So, the optimal thing to do if you live in a world like this n is to get n as large possible and you can reduce the standard deviation of the portfolio very much and there's no cost in terms of expected return.

如果现实中也这样简单的话,那么你就尽量增大,这样就能让投资组合的标准差,就会大大降低,从预期收益率的角度来看,这样做的成本是零。

耶鲁公开课 - 金融市场课程节选

In a statement,U.N.Secretary-General Ban Ki-moon expressed his "deep disappointment" with the verdict and said he "strongly deplores" the decision.

VOA: standard.2009.08.11

And if you ask the TAs in recitation tomorrow, they'll tell you that you see a lot of n log n algorithms in computer science.

如果你明天在复习课上问助教的话，他们会告诉你在计算机科学中,存在着非常多的n，log，n规模的算法。

麻省理工公开课 - 计算机科学及编程导论课程节选

Scott Campbell,the chief of the African Section of the U.N.Human Rights Office, says these atrocities are committed on a massive scale.

VOA: standard.2009.09.12

N And we can keep doing"T","A","N", ? and I think you see where it is going.

然后接着移动字母，T，A，和，我想大家应该知道后面是哪些字母了吧。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

In the past decade an average of almost 400 events each year have met the U.N.criteria for a natural disaster.

VOA: standard.2009.10.14

He urged revival of the slave-trade in the late 1850s, and he developed a theory of what he called warranteeism--w-a-r-r-a-n-t-e-e-I-s-m.

他促成了十八世纪五十年代后期,奴隶交易的复苏,还自己发明了一套理论,名为抵押品主义

耶鲁公开课 - 美国内战与重建课程节选

An arms expert said Monday he believed the ship was carrying weapons to Somalia, in contravention of a U.N.arms embargo.

VOA: standard.2009.11.10

In the case of France again, they are the work of a brilliant military engineer called Vauban, v-a-u-b-a-n.

例如法国,在佩皮尼昂 里尔 蒙梅迪等地方,这样的要塞城镇随处可见

耶鲁公开课 - 欧洲文明课程节选

Iran has not given a clear response to a U.N.proposal to send uranium to Russia and France for enrichment.

VOA: standard.2009.11.16

n If you want a literal percent, it's %% and then backslash n.

如果你想要一个百分比常量，就用%%，然后，反斜杠。

哈佛公开课 - 计算机科学课程节选

U.N.officials described it as a very serious incident and urged both sides to exercise caution and restraint.

VOA: standard.2009.09.11

N'est pas? Who is a statesman? What is a statesman?

政治家是何许人也？政治家是啥玩意儿？

耶鲁公开课 - 政治哲学导论课程节选

The U.N.investigators who are launching a probe into secret places of detention agree with Mohamed.

VOA: standard.2009.03.21

And this is called a "Pidgin," P-I-d-g-I-n, a pidgin.

这就是所谓的"混杂语言"

耶鲁公开课 - 心理学导论课程节选

But in a speech to the U.N. General Assembly Friday, Ivorian president Laurent Gbabgo confirmed that the elections would take place as planned on November 29.

VOA: standard.2009.09.29

It could have ended any number of other ways, and just so this story could end a number of ways.

它本可能以N种其它方式结尾，也正是如此这个故事才能以若干方式结尾。

耶鲁公开课 - 文学理论导论课程节选

The comments followed an overwhelming vote in the U.N.General Assembly on a non-binding resolution condemning the 47-year-old U.S.trade embargo against Cuba and urging Washington to lift the restrictions.

VOA: standard.2009.10.28

Suppose someone has been investing money for n years and xi is the return on the investment in a given year.

假设有人投资了n年,Xi是第i年的收益率

耶鲁公开课 - 金融市场课程节选

While the military has not publicly set a date for any major operation in the area, U.N.officials say some 80,000 civilians have fled the region in anticipation of a new offensive.

VOA: standard.2009.10.03

They're not going to want to add on another electron, because then it'll have to jump a very large energy level go from n equals 2, to n equals 3, and n equals 4, and so on.

它们不愿意增加另外一个电子，因为这会让它们跳到一个非常高的能级上去,依次是，n，等于，2，3，4，等等。

麻省理工公开课 - 化学原理课程节选

In an interview with VOA News, U.N.Spokesman Jose Diaz confirmed a letter had been sent to the United Nations pledging to transfer 45 square miles if a Cyprus settlement can be found.

VOA: standard.2009.11.11

n l So negative e, which is sub n l, because it's a function of n and l in terms of quantum numbers.

也就是负的，E，下标是，因为它是一个,关于量子数，n，和，l，的函数。

麻省理工公开课 - 化学原理课程节选

R is a function of n and takes on discrete values.

在这儿r是n的函数，取的是不连续的值。

麻省理工公开课 - 固态化学导论课程节选