If you are tired after hitting all those nails on the head, then it is time to hit the hay.

VOA: special.2009.09.20

What was neat about it is before that time, the predominant species to use for air conditioning or refrigeration was ammonia.

在这之前是很整洁的，之前最主要的用于空调或者冰箱的,物质是氨。

麻省理工公开课 - 固态化学导论课程节选

I guess, I, I think the reason I did is because about the time to do it is college, I think.

我想，我认为我这么做，是因为大学该是时候这么做了。

留学的优点是？ - SpeakingMax英语口语达人

In time,they said, the moving ocean floor is blocked when it comes up against the edge of a continent.

VOA: special.2010.01.12

One is time, that I think it takes certain amount of time to shed the thoughts, the anxiety in everything else.

第一是时间，要想,摆脱一些想法，摆脱焦虑，是需要一定的时间的。

普林斯顿公开课 - 人性课程节选

It tells the unusual story about a man who is born old and gets younger as time goes by.

VOA: special.2009.02.20

At the same time it's also clear that this epiphany is a remembered experience. It's recalled.

同时很明显这一顿悟,是一种记忆经验，它是被召回的。

耶鲁公开课 - 现代诗歌课程节选

"Mr.President," he said, "at this time it is suicide -- murder and will lose us every friend in the North.

VOA: special.2009.08.06

Now this is not the kind of stuff that computer scientists spend all their time doing, but it will germane.

现在，这并不是计算机科学家,要花费全部时间的地方，不过与此密切相关。

哈佛公开课 - 计算机科学课程节选

That is the amount of time it took Associated Press photographer Joe Rosenthal to capture a historic image on film.

VOA: special.2010.05.31

What's shown in this diagram is the progress of the developing embryo as it travels in time, down the fallopian tube.

这张图上显示的,就是胚胎发育的过程,是按照它在输卵管中移动的时间排序的

耶鲁公开课 - 生物医学工程探索课程节选

It is night time. And the only sound that can be heard is the long, lonely whistle coming from the train's engine.

VOA: special.2010.06.13

If the time you are interested in is not zero, you're allowed to cancel it and get the time from here.

如果你们关注的解不是零时刻,那么就可以忽略它,然后从这里解出时间

耶鲁公开课 - 基础物理课程节选

When it was time for him to leave the spacecraft, this is what the world heard: "Roger,Flight,we're GO."

VOA: special.2009.06.24

But,it's hard,if you're fourty-seven years, your job is a pretender to the throne, it's difficult.He had a hard time getting around.

但是,如果你要花四十七年,去争夺王位,是很不容易的,他做得很艰苦

耶鲁公开课 - 1871年后的法国课程节选

It is that time of year again. Warm weather means outdoor music festivals and one of the biggest is happening right now.

VOA: special.2009.05.01

And so it's not, perhaps, crippling if this is the conclusion we reach, but at the same time it's not the only possible conclusion.

因此，如果这就是我们的结论，也没有太大关系，但同时要知道这不是惟一可能的结论。

耶鲁公开课 - 文学理论导论课程节选

It was part of Virginia at that time, but is now located in the state of West Virginia.

VOA: special.2009.06.25

So the debt market is something worthy of studying because it really represents a market for time itself.

债券市场很值得研究,因为它恰恰代表着,证券市场的时间价值

耶鲁公开课 - 金融市场课程节选

Experts say by the time a farmer discovers that something is wrong, it is already too late.

VOA: special.2009.09.21

A gig is 10 to the 9, so it does two operations in the length of time it takes light to get from one foot off the table down to the table. That's amazing.

因此光行进一英尺的,时间内电脑可以,进行两次基本运算,这太神奇了。

麻省理工公开课 - 计算机科学及编程导论课程节选

One critic calls it the first television show in a long time that is just plain fun.

VOA: special.2010.01.08

If you never meditate before, this is a wonderful opportunity to do it for the first time.

如果你从没冥想过，这是你们尝试的好机会。

哈佛公开课 - 幸福课课程节选

He is remembered as the man who saved the Union and re-invented it at the same time.

VOA: special.2009.02.09

And I am not going to take the time to solve it because I think that is a waste of class time, but those are the three unknowns.

但我并不打算把解这几个方程,我觉得那会是浪费课堂时间，但那是三个未知式。

麻省理工公开课 - 固态化学导论课程节选

It is the first time that the world's biggest sports event will be held in Africa.

VOA: special.2010.06.09

That's a question for you: is it the greatest love story of our time?

我问你们，这是我们时代最伟大的爱情故事吗？

耶鲁公开课 - 1945年后的美国小说课程节选

Now,she has another starring role, only this time it is not on the big screen.

VOA: special.2009.10.09

So, the polis will see the invention of freedom in this way, and oddly enough, it is accompanied by the growth of slavery at the same time.

因此城邦见证了自由的兴起,而且很有趣的是,这同时也伴随着奴隶制的不断发展

耶鲁公开课 - 古希腊历史简介课程节选

If there was a time to go too fast it was probably last time, because it turns out this is something that's covered well in the textbook, so it's covered in chapter six of the textbook.

如果真有哪次讲得太快,可能就是上次,因为这些内容,已经在课本上写得很清楚了,就在课本的第六章

耶鲁公开课 - 博弈论课程节选