Only once did he look up. He had just written the sentence: "The arms,artillery and public property will be given over to the Union army."

VOA: special.2009.12.24

There we go. Now if I do this, an infinite number of times, we should get roughly 50/50, but now we have the ability to do things only once in awhile.

开始，如果我们，不停地按这个按钮，我们大致会有一半的机会听到猫叫，但是我们每次只有一次按按钮的机会。

哈佛公开课 - 计算机科学课程节选

It's a comedy that you only get once you performed and once you know what's happening, and

这种喜剧只有你自己明白，只有你自己知道发生了什么，

街头表演很有趣 - SpeakingMax英语口语达人

Publick Occurrences appeared only once.

VOA: special.2009.04.20

Pretty much I think about it only once a year, when I'm giving this very lecture.

最多是一年想一次，当我要上这节课时。

耶鲁公开课 - 死亡课程节选

He says that although Brazil has lost only once to the United States, all of their games against them have been difficult and combative.

VOA: standard.2009.06.29

Milton will only use the word career once in his poetic oeuvre and it comes -- it will come pretty soon, actually, in Sonnet Number Seven.

弥尔顿在他的全部诗歌作品中只用过一次事业这个词,我们马上就会看到，在十四行诗的第七行。

耶鲁公开课 - 弥尔顿课程节选

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

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

She says the only work needed once beets have been thinned is weeding and, when the weather is dry, a weekly watering.

VOA: special.2010.03.02

So, the guys in the back turn and run, which is the only thing you can possibly do once you feel our phalanx is broken.

然后,后面的人转过身去,夺路而逃,当你感到方阵快要被打散时,你唯一可能做的就是逃跑

耶鲁公开课 - 古希腊历史简介课程节选

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

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

Once the shuttle is retired this year, the only way for the United States to get astronauts into orbit will be on Russian Soyuz rockets.

VOA: special.2010.04.28

and the last quarter is a seminar in which you only go once a week for three hours

最后一个季度是研讨会，每周只需要参加三个小时，

群集课程 - SpeakingMax英语口语达人

Scientists once thought that these forests existed only in moderate and cold climates.

VOA: special.2009.08.25

We'll try to make this happen only once.

我们尝试让这个发生一次。

麻省理工公开课 - 化学原理课程节选

In nineteen eighty-six, Doctor Seuss wrote "You're Only Old Once."

VOA: special.2010.05.02

Then we realize once again that we can only know what it is if we come to understand--in this case, probably, it's best to say a cultural system, understood as a semiosis, within which it appears.

这样我们就又明白了,只有在一个特定的文化系统中,我们才能认识一个符号。

耶鲁公开课 - 文学理论导论课程节选

He cried once -- once only.

VOA: special.2009.05.16

For example, the stock market crash of 1929 is repeatedly re-expected even though it only happened once; it's just prominent in our thinking.

929年股市崩盘,就被反复提及,尽管这只发生过一次,但是人们对它影响深刻

耶鲁公开课 - 金融市场课程节选

The big cats once roamed throughout Asia, into Siberia, but conservationists say only a few thousand tigers remain in the wild;

VOA: standard.2010.02.22

As one of the great readers of Plato : of the last century once said, "Only the surface of things " reveals the essence of things."

如同上个世纪一位重要的柏拉图读者,曾说到，“仅有事物的表面,尽展其精华“

耶鲁公开课 - 政治哲学导论课程节选

"So the only question left is this: Are we going to let the special interests win once again?

VOA: standard.2010.03.19

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

She says she sees that poverty in schools where students admit to only bathing once a week.

VOA: standard.2010.02.25

We would only meet each other once or twice a week.

我们会一周见个一、两次。

The thing is 实战 - SpeakingMax英语口语达人

And what was once an online destination only for college students has expanded, says Michael Nelson.

VOA: standard.2010.07.23

Moreover, only once they're out of the way can he reproduce and copulate with the females.

只有把它们除掉,它才可以跟雌狮交配，繁殖。

耶鲁公开课 - 心理学导论课程节选

First of all, it will only be a minute or two at a time, maybe once or twice a lecture.

首先，每次只有一两分钟，一堂课最多不超过两次。

哈佛公开课 - 幸福课课程节选