And,if you say something to make me frightened or worried, my heart might stand still or skip a beat.

VOA: special.2010.07.11

The final exam: you should do well if you read, and if you come to lecture and if you attend section.

期末考：如果你读了，上课了，讨论了,期末考试对你来说将轻而易举。

耶鲁公开课 - 1945年后的美国小说课程节选

If you keep that in mind, and if you're just not shy, I mean, of course you're shy. Everybody's shy.

如果你能记住这个，而且你不害羞，当然你会害羞。所有人都会。

生存英语 - SpeakingMax英语口语达人

And even if you put those sentences into your own words, you should still give credit to where you got the information.

VOA: special.2009.04.16

And if you want to run a furnace and provide energy that's an extremely important thing to be able to calculate.

如果你点燃壁炉，提供能量,计算这个量,是非常重要的。

麻省理工公开课 - 热力学与动力学课程节选

And,if you wish someone good night, you might say, "sleep tight -- don't let the bed bugs bite."

VOA: special.2009.06.28

And then, if you go the real sodium chloride crystal and you do this same calculation but in three-dimensions.

接下来，如果回到实际的氯化钠晶体中,你们做同样的计算,但是是在三维中。

麻省理工公开课 - 固态化学导论课程节选

And,if you are a very good person, I would even say that you have a heart of gold.

VOA: special.2010.07.11

And if you come and ask a question that you could have easily answered by doing the reading, coming to lecture, or using Google, they're going to have less patience.

所以如果你过来仅仅是问一个,你能很轻松的,通过阅读、上课、或者，在谷歌上搜索就能得到答案的问题，他们会失去耐心的。

麻省理工公开课 - 计算机科学及编程导论课程节选

Experts say cabbage does not need full sun and grows easily if you water it regularly and protect against insects and disease.

VOA: special.2009.03.03

But if you look through your plate, and actually especially if you kind of look off to the side, hopefully you'll be able to see the individual lines of the spectrum.

你可以看到连续的光谱,但如果你们从片子里看,特别从周边看，你们能看到。

麻省理工公开课 - 化学原理课程节选

And if you want to buy an orchid, it will cost a lot less than it once did.

VOA: special.2010.04.06

And also if you have a surplus, and that's a desirable thing to do, you can sell it.

同时如果你还有剩余,这是很理想的情况,你可以卖掉它们

耶鲁公开课 - 古希腊历史简介课程节选

And if you do, here is a question you can answer: Who do you consider a "folk genius?"

VOA: special.2010.01.18

And if you believe in justice, well then, you'd better believe in justice for detainees and alleged terrorists.

如果相信正义，那就最好,相信囚犯也需要正义,对恐怖分子嫌疑人也一样。

普林斯顿公开课 - 国际座谈会课程节选

And while you're there, tell us if you have been able to quit smoking, and what advice you might have for others.

VOA: special.2010.05.31

And if you do show improvement, that will very significantly influence and emerge in terms of the impact it has on your overall semester grade.

并且如果你显示了进步，那将会有很显著地影响,跟出现影响在你整个学期的分数上。

耶鲁公开课 - 死亡课程节选

If you visit the western mountain and plains state of Montana you will know why it is known as Big Sky Country.

VOA: special.2009.08.16

And if you've forgotten about proteins and what their structure is you can go to Chapter 4 and read sort of a brief review of protein biochemistry.

如果你们忘记了蛋白质及结构的相关知识,就去读第四章,关于蛋白质生物化学的简短综述

耶鲁公开课 - 生物医学工程探索课程节选

This means that you can rise above your problems if you have a goal and work very hard.

VOA: special.2009.03.01

So this is like your children's book representation of the Christian God, and there it is as a blinding white cloud. You wouldn't even need the curls and the beard if you just had the blinding and the white.

这就像你们儿童书里上帝的代表，它就像一朵亮白的云，你甚至不需要,卷曲状和胡须状的图像，即使你只看的，亮白。

耶鲁公开课 - 1945年后的美国小说课程节选

If you are careful, you will soon see his true colors, and have nothing to do with him.

VOA: special.2009.05.24

Here's a twist, and if you found people who were less wonderful than you all, and asked them, you'd get a lot of people saying the curving thing.

这是错误的,如果你去找一些没有你们优秀的人,问他们这个问题,很多人会回答你沿着曲线飞出

耶鲁公开课 - 心理学导论课程节选

"A common threat is 'If you leave, I'm going to report you to immigration and you'll be arrested.

VOA: special.2010.06.14

And if you go to the green and blue, it is periphery.

再看看，绿色和蓝色是末梢周围。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

"And,it is strange that if you hate my brother so much, why would you marry his sister!"

VOA: special.2009.06.27

But even if you're totally nation-centric and even if you were only concerned with the United States, you still have to know what's going on around the world.

但即使你是一名完美的爱国主义者,即使你只关心美国的情况,你也得知道周围世界在发生着什么

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Did you know that if you tell a young person about the birds and the bees you are explaining about sex and birth?

VOA: special.2010.06.13

So if you learn how to look at films and if you are a real film buff, even bad movies will be useful, because they will give you things to develop your sensitivity toward the nature of film itself.

所以如果你们可以学会如何看电影,如果你们真的对电影了如指掌，即使是不好的电影也会很有用，因为,它会培养你对,电影本质的敏感程度。

麻省理工公开课 - 电影哲学课程节选

For example, if you started here and you did all this and you came back here, the average velocity would be zero, because you start and end at the same value of x, you get something; 0 divided by time will still be 0.

例如,如果你从这里开始运动,经过这个过程又回到这里,平均速度就是0,因为初态和末态的位移相同,你得到了什么呢,0除以时间还是0

耶鲁公开课 - 基础物理课程节选