In Kenya,a project aims to educate girls about H.I.V.prevention while helping them stay in school during their monthly periods.

VOA: special.2009.03.16

At the end of the day that's where Alexander H. Stephens went, with his Cornerstone Speech in 1861.

最后,就在那里,亚历山大斯蒂芬斯,于1861年完成了著名的基石演讲

耶鲁公开课 - 美国内战与重建课程节选

There's H&M which I can go into in and actually shop that. But

我可以去 H&M，也可以在那儿购物。但是，

小心超额消费 - SpeakingMax英语口语达人

The World Health Organization says Africa is behind other parts of the world in treating H.I.V./AIDS, tuberculosis and malaria.

VOA: special.2009.06.17

And thanks to Professor Hess, I can now say that the total energy delta H In other words, delta H formation of sodium chloride should be independent of paths.

感谢道盖斯教授，我们可以认为，这整体过程,氯化钠的化合能,与路径无关。

麻省理工公开课 - 固态化学导论课程节选

The experts say estimates of new H.I.V.infections are down by about fifteen percent in Africa, south of the Sahara Desert.

VOA: special.2009.12.08

H2 So the simplest case we can think of is with h 2 where we have two unpaired electrons, each in a 1 s orbital of a separate h atom.

最容易想到的例子是2,我们有两个未配对电子，每个都在一个分开的1s轨道上。

麻省理工公开课 - 化学原理课程节选

She researched some of the places Darwin visited on his trip on the ship H.M.S.Beagle in the eighteen thirties.

VOA: special.2009.02.27

All right, so now let's see how we execute it, and do the calculations that allow us to calculate this. So, one, what's delta H in step one?

好，现在我们看看怎样操作它，怎样进行计算，第一步,步骤I的ΔH是多少？

麻省理工公开课 - 热力学与动力学课程节选

These included questions from Rwandan students about subjects like drug use, H.I.V./AIDS and girls in school who get pregnant.

VOA: special.2009.11.12

Last time I began with Alexander H. Stephens's famous Cornerstone Speech in 1861, the famous passage by the Vice-President of the Confederacy declaring slavery the cornerstone of the Confederate Movement.

上次我说到亚历山大·H·史蒂芬,1861年著名的奠基石演讲,就是那个邦联副总统做的讲话,声称奴隶制是邦联运动的奠基石

耶鲁公开课 - 美国内战与重建课程节选

But in the last twenty years, H.I.V.and the collapse of the Soviet Union helped raise death rates in thirty-seven countries worldwide.

VOA: special.2010.05.05

printf That's not actually where someone implemented print F and related functions, rather, in dot H files, by convention, are prototypes.

那实际不是有某人在哪里执行,相关函数，而是在，h文件中，按照惯例，它们是函数原型。

哈佛公开课 - 计算机科学课程节选

He says Poe's influence can also be seen in the work of H.G.Wells and Alfred Hitchcock,to name a few.

VOA: special.2009.02.02

One thinks of D. H. Lawrence's Sons and Lovers, for example, in which the central character, Paul Morel, is crippled by an Oedipus complex that he can't master and the difficulties and complications of the plot are of this kind.

拿D。H。劳伦斯的《儿子与情人》来说，里面的核心人物保罗，被自己不能控制的俄狄浦斯情节困扰,复杂多变的情节也就由此展开。

耶鲁公开课 - 文学理论导论课程节选

In the past,the W.H.O.and experts with America's Centers for Disease Control and Prevention noted guidance for disease spread on airplanes.

VOA: special.2009.07.14

So we'll take h 2 and we'll run -- or actually we'll have h 2 filled in an evacuated glass tube.

我们马上就会在氢原子上试一试,我们用氢气-我们把玻璃管充满氢气。

麻省理工公开课 - 化学原理课程节选

Also in Kenya, a video game is being tested as another way to teach young people to avoid H.I.V.

VOA: special.2009.03.16

That is going to equal the energy of the electrons in H2 minus the energies of the electrons in H.

这等于H2分子的能量2,减去H原子中电子的能量。

麻省理工公开课 - 固态化学导论课程节选

Also in the top ten causes were infections, including tuberculosis and H.I.V./AIDS, as well as drowning and fire-related deaths.

VOA: special.2009.09.28

Delta u, delta H, familiar state functions, q w changes in their values, q, w, heat and work.

U，△H，很熟悉的态函数，它们的值在变化；

麻省理工公开课 - 热力学与动力学课程节选

W.H.O.special adviser Keiji Fukuda reported earlier this month that the virus has acted in some ways like seasonal flu.

VOA: special.2009.11.24

All right, so the type of bond energies that we can go and look up in tables are individual atom bonds, H-H, F-F, and the like.

好的，键能的类型,我们能够在表中查到,都是独立的原子键，H-H，F-F以及类似的。

麻省理工公开课 - 固态化学导论课程节选

In other new research, a study has found that circumcision does not decrease the risk that H.I.V.positive men will infect women.

VOA: special.2009.07.29

include cs50 h But this says include and this says include a file called cs50.h that lives in some special place on the server that the cs50 staff wrote.

这里写在,众所周知，cs50，h是由CS50的员工,编写的一个库文件。

哈佛公开课 - 计算机科学课程节选

The W.H.O.estimates that up to thirty percent of the medicines on sale in many of those countries are counterfeit.

VOA: special.2010.02.22

So when we talk about orbitals in multi-electron atoms, they're actually lower in energy than the corresponding h atom orbitals.

它们的能量实际上,比对应的氢,原子轨道要低。

麻省理工公开课 - 化学原理课程节选

W.H.O.special adviser Keiji Fukuda said last week that the virus has continued to act in some ways like seasonal flu.

VOA: special.2009.11.11

And in doing that, we'll also talk about the shapes of h atom wave functions, specifically the shapes of orbitals, and then radial probability distribution, which will make sense when we get to it.

为了这样做，我们要讲一讲，氢原子，波函数的形状，特别是轨道的形状，然后要讲到径向概率分布，当我们讲到它时，你们更能理解。

麻省理工公开课 - 化学原理课程节选

So, in talking about covalent bonds, we should be able to still apply a more general definition of a chemical bond, which should tell us that the h 2 molecule is going to be lower in energy than if we looked at 2 separate hydrogen atom molecules.

那么，既然提到了共价键，我们应该还可以,给化学键下一个更普遍的定义,那就是告诉我们氢分子能量应该更低,与两个分开的氢的单原子分子相比。

麻省理工公开课 - 化学原理课程节选