The researchers say many, if not all,people likely have these antibodies but do not always produce or use them efficiently.

VOA: special.2009.03.04

But then I asked another question, do you think trying to pick mutual funds, trying to find a mutual fund that will beat the market is a smart thing to do or not a smart thing to do?

但是接着我又问了另一个问题,你们认为选择共同基金,选择一种强于市场表现的共同基金,是不是明智之举呢

耶鲁公开课 - 金融市场课程节选

Use this pattern whenever you wish to express your intention to do or not to do something.

只要你想表达是否打算做某事，都能使用这个句型。

I will 课堂 - SpeakingMax英语口语达人

You do not have to dress to the nines, or wear your best clothes, for this kind of work.

VOA: special.2009.07.26

Think of that, that where the law is silent, we have the freedom to do or not to do as we choose, very important to the way we think of liberty today in a modern and you might say liberal democracy.

仔细想想，在法律所认可的地方，我们可按自己的选择去做或是不做，这对身在现代自由民主时代的我们,思考何为自由至关重要。

耶鲁公开课 - 政治哲学导论课程节选

If you are going out with your girlfriend,or boyfriend, you do not want another friend to go along on your date.

VOA: special.2009.07.26

We can't help understanding. We always already understand, which has nothing to do again with whether or not we're right or wrong.

我们控制不住地去理解，我们总是已经理解了，这与对错无关。

耶鲁公开课 - 文学理论导论课程节选

Acetaminophen,also called paracetamol, is found in Tylenol, Excedrin and other products that do not require a doctor's order or prescription.

VOA: special.2009.07.21

Adiabatic can be either reversible or not, and we're going to do that probably next time or two times.

绝热过程可以是可逆的，也可以不是，我们可能会在下一次或下下次课上,研究这个问题。

麻省理工公开课 - 热力学与动力学课程节选

They say many people die or are injured by the gas because they do not use these devices correctly.

VOA: special.2010.02.02

Try to imagine-- can you do that or can you not do that?-- try to imagine a round square.

试着去想象,你可不可以这样,试着去想象一个圆的方形

耶鲁公开课 - 死亡课程节选

He says the released documents do not include any top-secret reports or names of informants or information like troop movements.

VOA: special.2010.07.31

They are always say 32 bits or always 64 bits they do not vary in size based on what they're pointing at.

它们总是32位或者总是64位，它们的大小不会因它们所指的,内容不同而不同。

哈佛公开课 - 计算机科学课程节选

Netflix members do not have to go to the video store to get movies or to return them.

VOA: special.2009.09.25

Now, I put a version up there, I have no idea if this is the right way to do comparisons or not.

现在，我把一个版本放在这里了，我不知道这是不是,做比较的正确方法。

麻省理工公开课 - 计算机科学及编程导论课程节选

Maybe even lots of snow. If you do not have to drive in it or remove it, snow can be very beautiful.

VOA: special.2009.01.26

Or it could be not having to do with the cells themselves but maybe the environment that the cell finds itself in.

这种不同也可能和细胞本身无关,而和细胞所处的环境的变化有关

耶鲁公开课 - 生物医学工程探索课程节选

People do not need a job or a good credit history to get a loan from a pawnbroker.

VOA: special.2011.04.18

But whether or not you do so doesn't seem to make a big difference.

但不论你是否选择这样做,都不会有什么太大的影响

耶鲁公开课 - 心理学导论课程节选

But this question is not about whether people can read, but whether or not they do read.

VOA: special.2009.03.27

OK, not a quiz for points or anything, don't freak out, but I do want you to tell me who these people are. So, what about this person?

我们的课程将由一个小测试开始，别紧张，这不记录分数的,但我希望你们能告诉我这些人是谁？

麻省理工公开课 - 化学原理课程节选

Rates are higher when people do not trust their leaders or feel protected or connected to society.

VOA: special.2009.12.19

Unlike the ancient near eastern cities, these towns do not grow up around a temple or a marketplace, confluence of rivers as they do in medieval Europe.

和古代近东的城市不同,这些城邦不以庙宇或集市为中心来扩展的,也不像中世纪的欧洲那样以河流交汇点为中心

耶鲁公开课 - 古希腊历史简介课程节选

"I do not believe that any ethnic, racial or gender group has an advantage in sound judging."

VOA: special.2009.07.18

How do I determine whether or not I am happy?

我如何判断自己是否幸福？

哈佛公开课 - 幸福课课程节选

They do not know why da Vinci painted it, or how it ended up in the collection of French ruler Francis the First.

VOA: special.2010.06.23

As we do these little clicker poll things you can tell me if you find it helpful or not, then we can decide how to continue --whether to continue them in the future.

我们用表决器做这个小测试的同时,大家可以告诉我你们觉得这有没有帮助,然后我们再决定以后是否继续用

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Another finding is that people who are married or work together do not have as much of an effect on happiness as friends do.

VOA: special.2009.01.21

Thought it would ruin my career You can do that in the evenings It's not what it is to be a professor, or a philosophor, or anything that would be respected by a university.

觉得这会毁了我的事业,我可以在晚上搞这种研究,那不是一所大学里倍受尊敬的,一个教授，或是哲学家,或是任何人所会做的事。

麻省理工公开课 - 电影哲学课程节选

You can use it to show that you have or do not have, posses or do not possess, something tangible or intangible.

你可以用它来表示你有或者没有的东西，不管是这些东西是有形还是无形，都可以通用。

I have 课堂 - SpeakingMax英语口语达人