Doctor Fukuda, an acting assistant director-general, said the W.H.O.has been working with the member states to prepare for a pandemic.

VOA: special.2009.06.10

And if you work out the energetics as we've gone with thermochemistry, dH you discover there's a huge negative delta H.

如果你计算能量变化,就像在化学热力学中所作的一样，你会发现很大的负的。

麻省理工公开课 - 热力学与动力学课程节选

So notice a difference in these structures, is this has an n h bond whereas this has an o h bond.

注意它们之间的有一点不同，那就是一个有氮氢键,而另一个有氧氢键。

麻省理工公开课 - 化学原理课程节选

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

H for an ideal gas is only a function of temperature. This is not true for a real gas fortunately, but it's true for an ideal gas.

不正确的,但是幸运的是,对于理想气体是完全正确的。

麻省理工公开课 - 热力学与动力学课程节选

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

Well, we would have to H+ have one of these hydrogen atoms go to an H plus, * plus an electron, right? **H --> H+ + e-** So, now we have a hydrogen ion here.

我们先要让,一个氢原子变成氢离子，加上一个电子，对么*,我们现在有一个氢离子了。

麻省理工公开课 - 固态化学导论课程节选

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

In a .h file, it's generally the names of functions other people wrote.

在头文件里,只有一些函数名。

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

This is a painter called Frans Hals, H-A-L-S.

这是画家法兰斯·霍斯的作品

耶鲁公开课 - 欧洲文明课程节选

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

So most scholars think that that block of material comes from a different priestly school, and so we designate that H: holiness.

因此大部分学者认为这一部分内容,出自不同的祭司学派，我们用H来代表“神圣“

耶鲁公开课 - 旧约导论课程节选

Without new treatments,the W.H.O.says, the number of new cancer patients could reach twenty-seven million a year by two thousand thirty.

VOA: special.2009.03.02

Alexander H. Stephens, a Georgian, a slaveholder, said the cornerstone of the Confederacy, the cornerstone of their political movement, was what he called "American Negro slavery."

亚历山大· H·斯蒂芬斯,一个来自乔治亚州的奴隶主,用他的演讲为邦联打下了基石,这块邦联政治运动的基石,被他称为,"美国的黑人奴隶制度"

耶鲁公开课 - 美国内战与重建课程节选

He says these particles would offer a more exact method of transporting the short-lived drug, called B-H-three mimetic.

VOA: special.2010.03.16

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

And a program in Peru sends text messages to patients with H.I.V., reminding them to take their medicines.

VOA: special.2010.05.03

It is underpopulated right now, so if you are still shopping for a humanities subject, this one bears the precious CI-H designation.

现在它们的选课人数比较少，如果你们还需要一门人文学科，这些都是很可贵的沟通密集型课程。

麻省理工公开课 - 固态化学导论课程节选

Her work "Variations on H" is made up of different colors of finely made hands connected together to form a flowing cloth.

VOA: special.2009.11.04

So what we'll have here is a trigonal planar case, and you can see that we only have three electrons that are set for bonding, so we'll add three hydrogens, and for b h 3, we'll get a stable structure here.

让电子劲量远离的时候，不用考虑它,这个例子是平面三角形，你可以看到，只有3个电子可以成键。

麻省理工公开课 - 化学原理课程节选

Twenty years ago this week, President George H.W.Bush signed a civil rights law that Americans call the ADA.

VOA: special.2010.07.28

This is equal to zero. So this irreversible process this Joule-Thomson process, is a constant enthalpy process. Delta h for this process is equal to zero.

等于0。所以这个不可逆过程,也就是焦耳-汤姆逊过程,是一个等焓过程。

麻省理工公开课 - 热力学与动力学课程节选

She says,"The higher the level of pesticide residue in the urine, the higher the risk of A.D.H.D.

VOA: special.2010.05.26

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.has an influenza warning system in which phase six means that a pandemic is taking place.

VOA: special.2009.06.10

So now we have a different sign for delta H and it still happens spontaneously.

现在自由焓的变化的符号不一样了,但是这个过程仍然自发的进行。

麻省理工公开课 - 热力学与动力学课程节选

A calf is a young cow. A young female cow, especially one that has not yet had a calf, is called a heifer: H-E-I-F-E-R.

VOA: special.2009.07.21

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

So we have h, then we can draw our bond as a line.

那么我们有氢，可以把我们的键画成一条线。

麻省理工公开课 - 化学原理课程节选