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

And one thing I want to tell you to start out with is something about this c h 3 group here.

有一点需要告诉大家的是,从这个一个碳原子和三个氢原子的组合开始。

麻省理工公开课 - 化学原理课程节选

so I shop at the stores where most young girls shop, H&M, Forever 21, you know.

所以我就在大部分年轻姑娘购物的地方购物，H&M、Forever 21什么的，你知道。

住比佛利山庄 - SpeakingMax英语口语达人

Researchers say they have found a way to extend the storage life of a drug used to treat H.I.V.

VOA: special.2010.05.24

So, for example, down here I wrote that it was n 2 and that it was h 2, but when I re-wrote the molecules up here, you saw that it's an h h single bond where it's a nitrogen-nitrogen triple bond.

比如，在这下面我写的是氮分子2,而这个是氢分子，但我在上面把这些分子的形式改写了，大家可以看到,这是一个氢与氢之间的单键，含一个氮与氮之间的三键。

麻省理工公开课 - 化学原理课程节选

Fran?oise Barre-Sinoussi was honored with another scientist for research leading to the discovery of H.I.V., the virus that causes AIDS.

VOA: special.2009.05.13

Why didn't they keep right on going with G, H, I, J, K, L, M, N, O, P?

为什么他们不接着写下去呢,按照字母表

耶鲁公开课 - 聆听音乐课程节选

The idea is that mothers would pour the liquid into the baby's mouth as part of an H.I.V.treatment program.

VOA: special.2010.05.24

So, I just want to write a few examples down with a few values for delta u or delta H or delta S, and see whether we can get any clues from what we see.

我先写一些例子,例子包含一些内能，自由焓和熵的变化数值，然后看从中,我们能不能得到一些启示。

麻省理工公开课 - 热力学与动力学课程节选

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

I want to then do, I need to find the square root b squared plus h squared, right?

我接下来要求b的平方和h的平方,的和的平方根对不对？

麻省理工公开课 - 计算机科学及编程导论课程节选

If they had, they would have been tested to see if they needed treatment to prevent an infection like H.I.V.or hepatitis.

VOA: special.2010.02.10

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

That way,H.I.V.-infected women could have plenty of time to get the pouch from a health care provider early in their pregnancy.

VOA: special.2010.05.24

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

One was the ability of the vaccine to prevent infections from the human immunodeficiency virus, better known as H.I.V.

VOA: special.2009.10.13

stdio c So somewhere there's standard IO dot C, stdio h somewhere they're standard IO dot H, but, for me, right now, the only file I need to know about is the dot H, -- because what Sharp include really does -- it's what's called a preprocessor directive.

所以某个地方有一个，现在对于我来说它们是，我只要知道那个，h文件，因为Sharp包含的-,叫做预处理指令。

哈佛公开课 - 计算机科学课程节选

The drug is nevirapine. If it is given within seventy-two hours after birth, it can often protect babies from H.I.V.

VOA: special.2010.05.24

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 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

And there's actually a way that we can make predictions here, and what I'll tell you is molecular orbital theory predicts that h e 2 does not exist because it's not stabilized in terms of forming the molecule.

其实我们有一种办法可以做出预测，我要告诉你们的是分子轨道,理论预测He2不存在,因为它形成分子不稳定。

麻省理工公开课 - 化学原理课程节选

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

dT That means that dH is also equal to dH/dT, constant pressure dT. All right, so now I've T ot more dH/dT under constant pressure.

也等于偏H偏T恒压乘以，现在我已经得到了在恒压,状态下的偏H偏。

麻省理工公开课 - 热力学与动力学课程节选

Before the disaster, it suffered from high death rates among babies and high rates of H.I.V./AIDS,hepatitis and other communicable diseases.

VOA: special.2010.02.01

So here are results for pathway A, right, for delta u zero delta H zero. I didn't actually explicitly write it or did I?

这是路径A的结果，△U是零,△H是零，我没有明确地写出来,是吧？让我们把它再写一遍？

麻省理工公开课 - 热力学与动力学课程节选

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

Oh, I'm using H. Forgive me.

哦，我用的是H，不好意思。

麻省理工公开课 - 固态化学导论课程节选

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

In other words, I've got reactants, and I've got products. What's delta H of reaction?

换句话说，我有了反应物,我有了生成物？

麻省理工公开课 - 热力学与动力学课程节选

And that in the case of constant volume, U in this case that's my delta u, and then I'll H add my little delta n term to get delta H.

这是在等体情形下，此时的到的是Δ,然后我可以加上Δn的项来得到Δ

麻省理工公开课 - 热力学与动力学课程节选