They walk along the Frijoles stream lined with green trees that once was the only water supply for the valley.

VOA: special.2010.07.05

Well, "The wonder is I didn't see at once" and that is the grave that he has made for their child.

奇迹的是我曾经看不见“,是他为他们的孩子准备的坟墓。

耶鲁公开课 - 现代诗歌课程节选

But once you get into a situation, it complicates, you see things. How do that happen for you?

但一旦你到了一个环境中，有了具体情况，你就能明白，你是什么情况呢？

普林斯顿公开课 - 人性课程节选

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

VOA: special.2011.04.20

n l m s Once we have chosen a certain mix of n, l, m and s, it is used once for that particular atom.

一旦我们选定了一组量子数，它就只能被一个固定原子所有。

麻省理工公开课 - 固态化学导论课程节选

He said once the people understood that it was a war for democracy, they would win it quickly.

VOA: special.2009.11.12

A stranger with a flair for cocktail party descriptive prose might have commented that the room, at a quick glance, looked as if it had once been tenanted by two struggling twelve-year-old lawyers or researchists.

一个鸡尾酒派对的调酒师,也能看一眼就对这件房子作出评论，他会看得出房间曾被两个奋斗的,12岁的律师或研究员租过。

耶鲁公开课 - 1945年后的美国小说课程节选

The people of that frontier state were once famous for not believing everything people told them.

VOA: special.2009.08.16

So in other words, every time I merge the point that I kept emphasizing verbally there and that I'm only touching each number once, means that we have to account for the amount of time it takes to merge N which is going to be just N. Now, this is again one of these cyclical answers.

换言之，之前在做合并时,我不停地强调,对每个数字我只碰了一次，这就是说,我们要记录合并所花的时间量,也就是这里的,这又是一种循环性的答案。

哈佛公开课 - 计算机科学课程节选

I once landed on my face. I soon learned that it took much less effort for me to move on Mars than it did on Earth.

VOA: special.2010.07.10

That's where I--once that gets going, it goes for a long period of time.

一旦开始了,就喋喋不休

耶鲁公开课 - 聆听音乐课程节选

And so,to the Germans of Pennsylvania, Saint Nicholas or Pelznickel was a man dressed in fur who came once a year with gifts for good children.Soon, people began to feel that the love and kindness Pelznickel brought should be part of a celebration honoring the Christkindl, as the Germans called the Christ child.

VOA: special.2009.12.20

Let's just suppose that that game's just been played once for now.

假设我们正在进行这个博弈

耶鲁公开课 - 博弈论课程节选

When the country missed a September 15 deadline for publishing the voter list, many feared that setback would once again delay the vote.

VOA: standard.2009.09.29

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

Wilson said that one of his regrets was that he was not able to get more funding for schools, hospitals and roads in Afghanistan once the Soviets finally left.

VOA: standard.2010.02.11

Once it became true that people could raise food or gather food, or produce food for more than just themselves or their families, meant that people were free to do other things.

这些成为现实之后,人类不仅仅能为他们自己或家人,种植,收集或制造食物,也就是说人们可以有空来做别的事情

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Our interests in Afghanistan are quite limited. The president emphasized that the core interest is to prevent Afghanistan from once again becoming a platform for the launching of terrorist attacks.

VOA: standard.2009.03.27

Well, I'm just wondering what Locke's view is on once you have a government that's already in place, whether it is possible for people who are born into that government to then leave and return to the state of nature?

我只想知道洛克对此会怎么想,一旦政府已经成立了，其中出生的人们，是否有可能,脱离它，而重新回到自然状态呢？

耶鲁公开课 - 公正课程节选

For weeks,President Obama has maintained that his record-breaking $3.6-trillion budget for the next fiscal year makes vital investments in energy,health care,and education that will pay dividends once the nation emerges from a deep economic recession.

VOA: standard.2009.03.22

Because,indeed,they don't exist They're merely possible And we might say,you've got to exist in order for something to be bad for you But once we say that it seems we're running towards the position that in that case,death can't be bad for me because of course,when I'm dead,I don't exist ? So how can anything be bad for me?

因为他们其实并不存在,他们只是一种可能,我们由此认为你必须首先存在,某事才会让你害怕,但我们一旦这么说,我们似乎会得出这个结论,这种情况下死亡不可能让我害怕,因为我死了就不存在了,所以我怎么会害怕？

耶鲁公开课 - 死亡课程节选

The Okefenokee,which is already nearly choked with plants, would probably fill in,dry up, and become just another cypress and pine forest were it not for range fires that come along every once in awhile and burn out decayed vegetation.

VOA: standard.2010.03.29

In this book, what I wanna just hit home here, especially for those if you are watching this, is that spiritual life and religious expression is not something that you do once and then you're done.

这本书，我想重申它的精彩之处，观众们，在于告诉你们，精神生活和宗教表达,并不是一次就,可以完成的事儿。

普林斯顿公开课 - 人性课程节选

And they think, cause there was a study once, which said that all included tourism is the best thing for a third world country, and so they said,well, that is what they want, and they want to have a water source, and they want to have golf,and a marina,".

VOA: standard.2009.06.04

Bitter constraint, and sad occasion dear, Compels me to disturb your season due: For Lycidas is dead, dead ere his prime... Milton is lamenting, once again, that Milton has been compelled to begin writing.

因为亲友的惨遇，痛苦的重压，迫使我前来扰乱你正茂的年华：,利西达斯死了，死于峥嵘岁月。,弥尔顿再一次哀叹道，他是不得以写这首诗的。

耶鲁公开课 - 弥尔顿课程节选