Jurgen Rehm said having one or two drinks a day is not as harmful as having seven drinks at once.

VOA: special.2009.09.08

It's one that is maybe initially counterintuitive but actually, I think, is rather important once you begin to think about it.

乍一听你会觉得不可思议，但是仔细一想就会悟出其中道理。

耶鲁公开课 - 文学理论导论课程节选

There's one class that... it's a club where, once you get involved, you can teach a class.

还有一种，一旦你加入了这个俱乐部，你就可以教一门课。

阿卡贝拉组合最棒 - SpeakingMax英语口语达人

After the concert he said: "She has a voice that one hears only once in a hundred years."

VOA: special.2009.01.25

Once each time. Right? I only do one swap potentially, it-- though not one potentially, each time at the end of the loop I do a swap.

每次循环做一次，对么？我其实,就可能做了一次交换，也许并不是可能，每次循环的结束我都得做一次交换。

麻省理工公开课 - 计算机科学及编程导论课程节选

He told them to call home once a week and to read at least one book a month.

VOA: special.2010.05.28

He believed whatever one wag once set of monks, "I sleep, I eat, I digest," and they prayed, of course.

他对修士们的态度就像某个僧侣说的,"吃了就睡,睡了再吃",当然他们也会祈祷

耶鲁公开课 - 欧洲文明课程节选

Yet once he had enough paths built to welcome visitors, no one seemed interested in his "bat cave."

VOA: special.2009.12.07

A famous mathematician once said "Every question must have a correct answer " for every question one answer."

一位著名的数学家曾说过,“每一个问题都必定有一个正确的答案,每一个人们所回答的问题“

耶鲁公开课 - 政治哲学导论课程节选

He was ninety-four years old. Someone once asked him if he thought he would still be playing at one hundred years old.

VOA: special.2009.09.27

However, over the course of time, some ancient Israelites, not all at once and not unanimously, broke with this view and articulated a different view, that there was one divine power, one god.

然而随着时间推移一些犹太人，不是全体一致地，摒弃了这种，认同并信仰一种完全不同的，那就是世上只有一个神，上帝。

耶鲁公开课 - 旧约导论课程节选

Once a twice, he felt to agree need to play music that needed piano, so he made them believe one was playing.

VOA: special.2010.05.08

So, what two investigators at the University of British Columbia did is they simply positioned, once again, an attractive actor or confederate on one side of the bridge.

因此，在剑桥大学里，两个调查者所做的,同样是安排，一个迷人的演员或助手站在桥的一侧。

耶鲁公开课 - 心理学导论课程节选

People think that once you get infected one time you develop immunity for the rest of your life.

VOA: special.2011.04.20

When Milton opens Lycidas with that phrase, "Yet once more," one of the things that he's telling the reader is that ; yet once more he'll be making the same argument for unreadiness; the same argument for nervous anticipation that he'd made a number of times before.

当弥尔顿用那句“然而再一次的“开始的篇章时“,他要告诉读者的是,他会再一次的对诗中的迟疑作出相同的论述;,和他之前无数次作出的,关于不安的预知的，一成不变的论述。

耶鲁公开课 - 弥尔顿课程节选

"Perhaps with education once you learn you can do one item, it empowers you to do the next.

VOA: special.2010.12.27

Once you can take one derivative, you can take any number of derivatives and the derivative of the velocity is called the acceleration, and we write it as the second derivative of position.

只要你能求一阶导数,你就能求任意阶的导数,速度的导数被称为"加速度",我们把它写成位移的二阶导数

耶鲁公开课 - 基础物理课程节选

I thought that sooner or later one thing was sure to happen: The first real test once he was through school would ruin him.

VOA: special.2010.03.27

So let's imagine we're playing the game again, once again you're going to the movies, once again the first one didn't happen so you didn't for some reason it was cancelled that night because someone had a bad cold or something.

我们再来进行一次这个博弈,假设你们又要一起去看电影,由于种种原因,第一天晚上你们都没有看成,假装因为有一个人感冒了

耶鲁公开课 - 博弈论课程节选

Eight-sixty-one Jasmine Street had been a fine house once, but now it was old and dying.

VOA: special.2010.06.12

One thing that I want to mention that is really important is once you have double bonds, what happens between those two atoms in the molecule is they can no longer rotate in relation to each other.

我要提醒你们的非常重要的一点事,一旦有了双键，分子中的两个原子,就不能相对旋转了。

麻省理工公开课 - 化学原理课程节选

"I thought that sooner or later one thing was sure to happen: The first real test once he was through school would ruin him.

VOA: special.2009.01.03

As one of my favorite historians warned me once, "Don't leave out the politics."

我最喜欢的一位历史学家曾如此警告过我,"不要忽略了政治"

耶鲁公开课 - 美国内战与重建课程节选

One visitor,a former Navy man,once said: "The only good thing about my fighting in the war was that I was too young to be terrified."

VOA: special.2009.05.25

Again,just to remind you,in order to get the intuitions actually flowing, what I'm going to do once I've separated the body and the personality this way, is torture one of the end products.

为了让你们得到最直观的感知，一旦把肉体和人格截然分开，我们便要折磨其中一个最终产物。

耶鲁公开课 - 死亡课程节选

A little past one o'clock in the afternoon, a Confederate gun fired,once.

VOA: special.2009.11.05

But, once you get beyond n equals one, 2s2 2p6 3s2 3s6 it's always 2s2, 2p6, 3s2, 3s6.

但是，一旦你让n大于，它就总是。

麻省理工公开课 - 固态化学导论课程节选

One may need to watch it more than once to penetrate the different layers of the human condition.

VOA: standard.2010.07.20

And once you get out, you can only... you're committed to doing one or the other.

一旦你学完了，你只能……你只能做一个或者另一个，

美国式对比英国式 - SpeakingMax英语口语达人

Okay, and we're just going to keep-- It'll be fine, and we're just going to keep going and once you get to the end one then we're going to repeat. Okay? Here we go.

好的,我们要连续,这样可以了,我们要连续唱这段曲子,到底的时候再,从头开始,好吗,开始

耶鲁公开课 - 聆听音乐课程节选