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

So there was a good question in Wednesday's class about the de Broglie wavelength and if it can actually go to infinity.

在周三的课上有个关于德布罗意波波长的问题,非常好，就是它能不能到无穷大。

麻省理工公开课 - 化学原理课程节选

And if it is going to be a standing wave then this must be an integral number of wavelengths.

如果这有个驻波的话,那么周长就是个整数。

麻省理工公开课 - 固态化学导论课程节选

If it is compromised,then the bees could not defend themselves against pesticide products, fungal infections, bacteria or poor nutrition.

VOA: special.2009.09.22

If it is right, I'm going to print out the information but I'm also going to change that variable to true.

看如果它是对的,它是对的的话,我将会输出结果。

麻省理工公开课 - 计算机科学及编程导论课程节选

G.M.has until June first to offer a plan to the government if it is to receive new government loans.

VOA: special.2009.05.01

If it ever did have an author's name attached to it, we don't have any evidence in the manuscript history.

如果它曾经写有作者的名字，那么原始手稿里没有任何证据。

耶鲁公开课 - 新约课程节选

As a boy,Carl said he knew if it was time to go to school by the sound of a train.

VOA: special.2009.11.01

At a very early age, Milton brooded on his poetic vocation as if it were an actual calling from God.

在很早的时候，弥尔顿就在沉思他的诗歌事业,就像是来自上帝真实的召唤。

耶鲁公开课 - 弥尔顿课程节选

The bill seemed to curl up as if it had been rolled and stuck into the end of a gun barrel.

VOA: special.2009.11.14

So I don't know if it Does it matter what you say to babies as long as you say something.

所以我想知道,是不是只要你对婴儿说话就行,说话的内容并不重要

耶鲁公开课 - 心理学导论课程节选

He said the United States must build up its sea power,too, if it wanted to be a great nation.

VOA: special.2010.07.08

And if we do, in fact, hit it with light to get the electrons off, it will go back to the straight up in position, or if it gets knocked hard enough it does that, too.

而且如果我们这么做，事实上，用光轰击它以逐出电子，它就会在原位置沿直线返回，或者如果它被撞击的足够猛烈,也会出现上述现象。

麻省理工公开课 - 化学原理课程节选

But my chest felt heavy, and my heart pounded in my body as if it were going to explode.

VOA: special.2010.08.01

Then on the other hand, my own writing and the discipline that writing takes if it is to be good and it's to be accurate.

另一方面，就是我自己的写作经历,还有写出好作品所需要的,那种精确准则。

普林斯顿公开课 - 人性课程节选

But recently, civil liberties groups had threatened to take the county to court if it did not remove them.

VOA: special.2011.03.17

Not the soul can't be destroyed or if it can be destroyed, it is very very hard and takes very very long time.

而不是灵魂不会毁灭，或者,如果可以毁灭，毁灭会很难,需要很长时间。

耶鲁公开课 - 死亡课程节选

An object in the solar system could be identified if it appeared to move from its place in the earlier photograph.

VOA: special.2010.07.11

Let's make some risky loans and if it succeeds we make money; if the thing blows up, well then they government will pay.

然后贷款给一些风险大的项目,如果成功了,我们会赚钱,如果事情搞砸了,那时政府自会买单

耶鲁公开课 - 金融市场课程节选

The Securities and Exchange Commission says a private company must report financial information if it has five hundred shareholders or more.

VOA: special.2011.01.07

If it doesn't surprise, it isn't worth it; it doesn't have value.

如果它不会令人惊讶，它就不值得，它就没有价值。

耶鲁公开课 - 文学理论导论课程节选

But others say music like Lead Belly's would never have become widely known if it wasn't for the work of John Lomax.

VOA: special.2010.01.18

Raise your hand if it would, if you think it would.

如果你认为是正当的，请举起手来。

耶鲁公开课 - 公正课程节选

At the beginning of the talks, the United States was not sure if it wanted all or only part of the Philippines.

VOA: special.2010.07.22

If it doesn't matter, if I experience this ups and downs.

如果这些都无关紧要，总要经历高低潮。

哈佛公开课 - 幸福课课程节选

However,he says, it remains to be seen if it is possible for cities to paint their roofs white.

VOA: special.2010.03.02

The Law of Inertia says that, "If a body has no forces acting on it, then it will remain at rest if it was at rest to begin with, or if it had a velocity to begin with, it will maintain that velocity."

惯性定律就是,"如果一个物体不受外力作用,那么静止的物体依然保持静止,如果物体有个初速度,那么就保持此速度不变"

耶鲁公开课 - 基础物理课程节选

They understand that they are getting value for their money: A cow is worth nearly twice as much if it is vaccinated.

VOA: special.2009.11.03

And so if I have concerns, it is sort of more indirect directions I think economic growth is doing all right, it's doing quite all right, 8% and if it's not 9%, if it's 8% ,7% range that's very handsome economic growth rate that should not be weigh upon anybody's mind as a matter of concern.

如果要说我关心什么，那就是隐藏的经济发展方向,我觉得印度的经济增长很不错，增长势头良好，即便不是9%，也是7%到,这种经济增长速度已经很厉害了,这种情况谁都不应该,表示担心。

普林斯顿公开课 - 国际座谈会课程节选

If the stock went up yesterday, it's more likely to go up today, than if it didn't go up yesterday.

如果股票昨天涨了，今天涨的可能性也就更大，如果昨天没涨今天也不大可能会涨。

麻省理工公开课 - 计算机科学及编程导论课程节选