But when the telescope reached orbit, NASA scientists were shocked to discover that the costly mirror of the telescope had not been shaped correctly.

VOA: special.2009.09.30

But when the concentration in the alloy is 50/50 by mole, something magical happens.

但是当合金中的浓度,是1比1的时候，有些神奇的事发生了。

麻省理工公开课 - 固态化学导论课程节选

I knew the storyline before I went, but when the lights went down, and then the story came out.

我去看之前就知道故事情节了，但当灯光暗下来，演出开始，

歌剧魅影 - SpeakingMax英语口语达人

But when the birds saw fishing boats, they looked for food near the boats.

VOA: special.2010.03.02

When these tyrannies take place, they last for different periods of time, but when the tyrant is removed, what follows after that is, there is never again in that town a one-man rule of any kind.

当僭主统治步入历史舞台,它走过了很多历史时期,但当它寿终正寝之后,在那座城邦里再也没有出现过,任何形式的独裁者了

耶鲁公开课 - 古希腊历史简介课程节选

But when the workers return the next day, the birds have replaced the sticks.

VOA: special.2009.10.06

So I think, at least when there's the need to be careful-- maybe we don't normally have a need to be careful-- but when there's the need to be careful, we should say, talk of the mind is a way of talking about the P-functioning of the body.

所以我认为,至少在需要严谨的时候,也许我们并不常需要如此严谨,但是当我们需要谨慎时,我们应该会说,心灵是表达,肉体人类能力的一种方式

耶鲁公开课 - 死亡课程节选

But when the morning came, he woke up in great pain.

VOA: special.2009.05.30

But when you solve the Schrodingerequation, you don't get just a set of solutions that are dependent upon one number.

但当你解薛定谔的方程式时，你没得到有一个统一答案的,一系列解决方法。

麻省理工公开课 - 固态化学导论课程节选

But when the ice melts, the sun warms ocean waters.

VOA: special.2009.05.05

The victory was mine, I still believe, but when I made to take trophy, winded Helen shook her head, declaring, "I have the curse."

我依然相信，胜利属于我，但是我刚要，摘得战利品时，海伦气喘吁吁地摇了摇头，说道：,我被诅咒了“

耶鲁公开课 - 1945年后的美国小说课程节选

But when they see two guys from the South like Cliff Richey and me, one white and one colored, both sharing a room and being close friends, it must do a little good."

VOA: special.2010.02.07

So, for example, down here I wrote that it was n 2 and that it was h 2, but when I re-wrote the molecules up here, you saw that it's an h h single bond where it's a nitrogen-nitrogen triple bond.

比如，在这下面我写的是氮分子2,而这个是氢分子，但我在上面把这些分子的形式改写了，大家可以看到,这是一个氢与氢之间的单键，含一个氮与氮之间的三键。

麻省理工公开课 - 化学原理课程节选

"One soldier had been fighting in the jungles for years. And I don't know if it had affected him or not, but when the clerk handed him a tweed suit to try on he spent three hours searching through the fuzz for snipers."

VOA: special.2009.03.09

Well, all of that might in fact be the goal but it's when you start hearing things like this hopefully that you at least start to grimace a little bit.

这是我们的目标,但实际上当你开始听到这样的事情,你可能开始愁闷苦脸了。

哈佛公开课 - 计算机科学课程节选

But when the Berlin Wall fell and the Soviet Union dissolved in 1989, the western alliance's main reason for being disappeared.

VOA: standard.2010.06.11

Now, I'm not sure what kind of video we're talking about, and I'm not sure if the lecture will be the internet when we're all done. But nonetheless I'm gonna call this the next big thing-the video internet .

呃，我不确定我们要谈关于什么样的视频,我也不确定当这个讲座全部结束时,还是不是关于网络，但尽管如此,我还是要叫它为下一重大事件，网络视频。

麻省理工公开课 - 媒体、教育、市场课程节选

First it was warning shots, but when the Mavi Marmara wouldn't stop, these warnings turned into an attack.

VOA: standard.2010.06.01

But the only way you're going to find out is when you actually deal with the problem.

但是只有你动手去解题,才是验证自己会与不会的唯一方法

耶鲁公开课 - 基础物理课程节选

But when they went before reporters after the meeting, President Obama downplayed any tensions.

VOA: standard.2009.11.13

That is the fundamental idea that may seem simple and obvious to you, but it certainly wasn't back when the idea first came up.

刚才讲的就是最基本的概念,可能看起来比较简单明显,但这些概念刚出现时并不被广泛理解

耶鲁公开课 - 金融市场课程节选

But when the Fitzpatricks purchased it, they opened it year round.

VOA: standard.2009.12.25

But in fact, when the person watching this has to assess their intelligence they give the quiz asker a higher intelligence rating than the other person.

但事实上，看这个问答的人,要评估他们的智力，他们认为,提问者的智力比被问者的要高。

耶鲁公开课 - 心理学导论课程节选

who watch the news and see the pictures but when they're able to put a true voice and face to what's going on down there and I think said McPhee.

VOA: standard.2010.06.19

With the sports I played, if you're trying too hard in some ways, if you're thinking about it too much, but when you let yourself be in the moment, It's really amazing what happens.

在我参加过的体育项目上，如果某种程度上太过努力，想得太多不可，只有当你在这一刻顺其自然，会发生很奇妙的事情。

普林斯顿公开课 - 人性课程节选

His presidency began before a crowd a million strong, but when the cheering stopped, he was one man dealing with overlapping crises: an economy in free fall and two unpopular wars.

VOA: standard.2010.01.16

Lloyds of London, which now does things like ensure quarterbacks' knees and things 685 00:36:00,852 --> 00:36:02,973 but it begins in the eighteenth century when people go into the docks.

伦敦的劳埃德市场,现在做一些,为四分卫的膝盖保险之类的事不过他们早在在十八世纪,航运业刚兴起时就开始做保险了

耶鲁公开课 - 欧洲文明课程节选

But when the fishes are in the water they just see that the biscuit is coming and immediately it gets into the water and they too will come and take it off."

VOA: standard.2009.09.26

The problem of memory is just as important to the psychological dynamics of the fall of Adam and Eve, but as we will see when we look at Book Four, surely it's the problem of the poet's memory that's the most troubling in Paradise Lost.

记忆的问题的重要性与,亚当与夏娃堕落后心里的变化相当，但是我们将在第四册书看到，确实是诗人自己记忆的问题,困扰着《失乐园》这部作品。

耶鲁公开课 - 弥尔顿课程节选

But when you look at the troops that will be returnning home, when you balance the number of troops that will be returning home to various countries and the new troops will be adding.

但是你看看那些要撤回各自国家的士兵,与新增士兵的数量对比一下。

普林斯顿公开课 - 国际座谈会课程节选