This means you should not risk losing something you have by trying to get more of something you do not have.

VOA: special.2010.06.13

so it's nice just to be able to relax and not have to do work.

所以能抽空放松一下感觉非常不错。

百慕大出身 - SpeakingMax英语口语达人

But hopefully, you will not be satisfied to just make a general statement here when we do have these glitches.

但是希望，大家不会仅,仅因为大致符合就满意了,毕竟还有些小偏差。

麻省理工公开课 - 化学原理课程节选

Professor Nyokong says she wants to support young women in science so they do not have to experience this.

VOA: special.2009.05.13

This is a sign of my economic status: I don't have to work. It is middle and lower-class women who do not get to observe purdah in this way.

但这恰好是我经济地位的标志：,我不需要工作，只有中下阶层的女人,才像这样不遵守深闺的习俗。

普林斯顿公开课 - 人性课程节选

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

VOA: special.2009.07.26

That's a sign to me that we're not there yet and we have a lot more to do in finance.

很明显，我们并没达到那个边界,这说明我们在金融领域还有很多事情要做。

耶鲁公开课 - 金融市场课程节选

Friends and relatives do not even have to go to the store to choose a gift from the registry.

VOA: special.2010.08.09

He says, "I believe in the practice and philosophy of what we have agreed to call magic, in what I must call the evocation of spirits, though I do not know what they are."

他说我相信我们所称作的,关于魔法的实践和哲学，我认为那是对灵魂的召唤，尽管我并不知道它们是什么“

耶鲁公开课 - 现代诗歌课程节选

Controllers on the ground joked that the flight had gone so well they did not have enough to do.

VOA: special.2009.07.22

Point I want to make about this, though, is that we are going to cover a lot of material that is not in the assigned readings, and we do have assigned readings associated with each one of these lectures.

要说的一点是,我们会有很多,不在拓展阅读里面的材料，而且还有涉及到,每节课内容的拓展阅读。

麻省理工公开课 - 计算机科学及编程导论课程节选

Mister Ramirez might not have been able to express himself in English, but he could do so with his art.

VOA: special.2010.04.14

I want you to learn; I do not have you compete against your classmates.

我希望你们去学习;,我不会让你们与同学竞争。

麻省理工公开课 - 固态化学导论课程节选

So the first challenge is, how do we reach all the women who do not have access to a prevention program?"

VOA: special.2009.07.29

And in mock trials, people with baby faces are more likely to be found innocent than people like Ben Affleck, who do not have baby faces.

在模拟法庭，拥有娃娃脸的人比像本·阿弗莱克的人,更易被判定无罪，他没有娃娃脸。

耶鲁公开课 - 心理学导论课程节选

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

VOA: special.2009.09.25

You do not have to wave your hands in the air if you're math phobic, but since some of you are, let me just get you all to take a deep breath.

如果你有数学恐惧症你不必举手示意,既然有人是,那么让我们深呼吸一下

耶鲁公开课 - 博弈论课程节选

And since they do not have enough money to hire people, the work will simply not be done."

VOA: special.2010.04.13

The emperor in the east was able to do that because they were not conquered by the barbarians, but in the West, you have this situation where nobody is fully in charge.

东方帝王之所以能够如愿以偿,是因为他们没有受到野蛮人的入侵,但是在西方,你面临的情形是,没有人负有完全的责任

耶鲁公开课 - 古希腊历史简介课程节选

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

But, as I mentioned briefly in the last class, the notorious difficulties attending this poem seem to have very little to do with Milton's grief over the death of Edward King, which may well not have been all that troubled or complicated.

不过，正如我上节课简要提到的,这首诗的阅读障碍和弥尔顿对爱德华金之死的,悲啜之情并无太大关系，他的哀悼也不是使这首诗艰深复杂的全部原因。

耶鲁公开课 - 弥尔顿课程节选

Many parents do not have the money to buy books, so sometimes the teachers pay for them.

VOA: special.2009.08.24

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

He said they would provide security and stability to people who have insurance, and make it possible to insure millions who do not.

VOA: special.2009.09.12

We not only have a right to our lives but to do whatever we regard as needful to protect our lives.

这种权利不仅适用于我们的生活,还适用于我们所认为的一切可以,维护生活所需的行为。

耶鲁公开课 - 政治哲学导论课程节选

And when someone tells you that the cards are stacked against you, he is saying you do not have a chance to succeed.

VOA: special.2009.11.22

And for Americans, all our democratic experience and do I have to put a tie on for this event or not?

美国人也如此,我们都参与民主政治,知道在什么场合需要系领带,比如现在

耶鲁公开课 - 美国内战与重建课程节选

Girls from poor families can miss up to a week of school each month because they do not have enough money for supplies.

VOA: special.2009.03.16

So in oxygen we have a similar situation where, in fact, we are not going to promote any of the electrons because we have two lone pair electrons no matter what we do.

在氧中，情况很类似，我们不能激发电子,因为无论如何我们都有两个孤对电子。

麻省理工公开课 - 化学原理课程节选

If the really crucial question is not Do I survive, but Do I have what I wanted when I wanted to survive?

如果关键的问题不是我是否存活，而是我存活时是否有我需要的东西？

耶鲁公开课 - 死亡课程节选