One of the U.N.Millennium Development Goals is to reduce the under-five death rate by two-thirds by two thousand fifteen.

VOA: special.2009.09.28

So, what we're saying is that we have n equals to 4, and m sub I being equal to negative 2.

我们说的是ｎ等于４,ｍｌ等于－２

麻省理工公开课 - 化学原理课程节选

That energy will be absorbed by the hydrogen atom, n=1 the electron will rise from n equals one n=2 to n equals two.

这能量将会被氢原子吸收，这个电子会从,上升到。

麻省理工公开课 - 固态化学导论课程节选

She has led the Tennessee Lady Vols to first place in eight N.C.A.A.national championships.

VOA: special.2009.03.20

So, if we took the case of nitrogen, if we add an electron to nitrogen and go to n minus, we find that the change in energy is 7 kilojoules per mole.

如果我们以氮为例，如果我们给氮增加个电子令它变成-1价的氮，我们会发现能量的变化是，7，千焦每摩尔。

麻省理工公开课 - 化学原理课程节选

Russia and China both urged Iran to cooperate with the U.N.

VOA: special.2009.09.26

If you have a sample with n observations, it's the summation I = 1 to n of xi/n--that's the average.

如果你有n个观测值,对Xi从i=1到n求和再除以n

耶鲁公开课 - 金融市场课程节选

The U.N.AIDS agency gives credit to better use of preventive measures.

VOA: special.2010.07.14

So when we count, generally, again, we start from zero, we go to N minus 1.

当我们计数时，一般的，再次强调，我们从0开始，到N-1结束。

哈佛公开课 - 计算机科学课程节选

Still the U.N.says there is much work to be done.

VOA: special.2010.04.05

With respect to n, the number of moles.

对n的偏导数，这里的n是摩尔数。

麻省理工公开课 - 热力学与动力学课程节选

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

The order complexity here, if I actually write it would be-- sorry, order n times m, and if m was equal to n, that would be order n squared, and this is quadratic.

如果m等于n的话,也就是n的平方，这是一个平方复杂度的问题，这是和前面不同类型的，好，我在做什么呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

In February, the government of Pakistan asked U.N.Secretary-General Ban Ki-moon to establish an international commission to investigate Mrs.Bhutto's assassination.

VOA: standard.2009.06.21

There are some relative, the notion that the energy gap between n equals one and n equals two is greater than that for n equals two to n equals three. That is correctly represented.

还有很多与之相关的内容，比如说这个观点，第一能量级和第二能量级,之间的能量差要大于第二和第三能量级间的,能量差，而这已经被正确地表示出来了。

麻省理工公开课 - 固态化学导论课程节选

The U.S.-sponsored Security Council resolution, expected to win easy approval next week, will create a special representative to the U.N.

VOA: standard.2009.09.25

And so when we get to n equals three that would be m shell by the spectroscopists' notation.

当n等于3的时候,根据光谱学家的标记法，那就是第m层。

麻省理工公开课 - 固态化学导论课程节选

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

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

Several of them targeted foreigners. U.N.chief Ban says humanitarian assistance to the Pakistani people will continue despite this tragedy.

VOA: standard.2009.10.05

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

"All those problems and all those reactions are a response to the sanctions imposed by not only the fourth U.N.

VOA: standard.2010.07.23

And then we go to n equals three.

接着让n等于。

麻省理工公开课 - 固态化学导论课程节选

The Goldstone Report will now go to the U.N.Security Council which could refer it to the International Criminal Court in The Hague.

VOA: standard.2009.10.18

When we have n observations it's just the summation i = 1 to n of 2/n.

当有n个观察值,这就是在i取1到n时,x减去x均值的平方,除以n的累加

耶鲁公开课 - 金融市场课程节选

U.N.officials estimated up to 200,000 people may have already fled the fighting and perhaps 300,000 more could leave in the coming days.

VOA: standard.2009.05.07

So, from going from the shell of n equals 2, let's say, to the shell of n equals 3.

比如说，从ｎ等于２到ｎ,等于３壳层如何变化。

麻省理工公开课 - 化学原理课程节选

After he leaves New York, he will go to Chile and Brazil. He spoke to reporters after a meeting with the U.N.

VOA: standard.2009.03.25

n Alright. So if n is less than or equal to 1, return n. Well that's not right, right?

好吧，如果n小于等于1，它会返回，这里不对，是吧？

麻省理工公开课 - 计算机科学及编程导论课程节选

And, if we go to n equals two, this would be the l shell.

而当n等于2时，也就是L层。

麻省理工公开课 - 固态化学导论课程节选