But seeing the seriousness of his question,she said, "The mark has so often been called a charm that I was simple enough to imagine it might be so."

VOA: special.2009.09.26

Why has it been so hard and why does it continue to be difficult to identify these pluripotent cells within tissues?

为什么会那么难呢,为什么在组织中识别多能干细胞,始终困难重重呢

耶鲁公开课 - 生物医学工程探索课程节选

So I think that has been, you know, that basically is in his memory and it's because of that.

所以我认为，基本上就是为了这个而纪念他，

关于哥伦布环岛 - SpeakingMax英语口语达人

"A player who hasn't been playing for very long, I try to keep them next to the section player, or leader as we call it, that has been playing a while so they can always ask questions say, 'Hey,I don't know what that means.'" Matt is now in college, studying music education.

VOA: special.2010.06.21

They cannot rest quietly in Hades unless their body has been properly buried; so you got to do it.

他们无法安息于地府,除非妥善安葬他们的肉身,所以必须要好好处理死者的尸体

耶鲁公开课 - 古希腊历史简介课程节选

It is so important as an image. And it is probably this image that someone has been trying to defeat,

VOA: standard.2009.12.05

And I have purposely made the arrow shorter to indicate that it has been slowed because we are going to argue its mass didn't change, so the only way to change its energy is to change its velocity.

我已经故意将这个箭头弄短,用来象征它变慢了,因为我们将证明它的质量没有变，只有它的能量改变了,也就是它的速度变了。

麻省理工公开课 - 固态化学导论课程节选

Mustafa argues that whatever the original point of the ban, it has been so widely violated as to become meaningless.

VOA: standard.2009.10.08

This is a picture of a neuron, this particular neuron has been filled with a fluorescent dye so that it's colored green.

这是一幅神经元的图片,这个特定的神经元,已经被荧光染料染成了绿色

耶鲁公开课 - 生物医学工程探索课程节选

"So,BP's phenomenal growth in recent years has been halted, slightly reversed, but the important thing is it has survived so far;

VOA: standard.2010.07.27

So for me it has been trying to find a place for religious groups and particularly our ministry to talk about the outdoors, the environment, about nature, in a meaningful way.

所以我一直在寻找一个平台,在这个平台上，宗教团体，尤其是我们全体牧师,可以和大家以一种更有意义的方式，来讨论户外活动，环境，和自然。

普林斯顿公开课 - 人性课程节选

So she has always been a warrior. It is just in a different tone for this film.

VOA: standard.2010.05.27

I think so. But video phone has been very hard to achieve. It's either been to be expensive, or too crowded, or can we use the internet to finally introduce video phone and this is different from video on-demand.

我也这么认为，但视频电话要成功很困难,它要么很贵，要么很拥堵，或者我们是否可以使用互联网引入视频电话,这与随需视频是不同的。

麻省理工公开课 - 媒体、教育、市场课程节选

So you've got to get it around the track,". Bolt has been blessed with amazing talent, and his height gives him a long stride.

VOA: standard.2009.08.21

All of the major universities -Harvard has been doing very well too and so have Duke, MIT, Amherst,a lot of -it seems that universities manage to invest very well, at least they have in recent decades.

所有主要高校...,当然哈佛做得也很不错,杜克,麻省理工,阿默斯特,都很不错,似乎各大高校的投资收益都不错,至少最近几十年如此

耶鲁公开课 - 金融市场课程节选

"I think one of the reasons why Fosamax has been reported more than any of the other drugs so far is that it came out first."

VOA: standard.2010.03.14

But also you'd think that if there was a group of people that really had been attending the calories it would be this group, because very few people who come in for weight loss are doing it for the first time, so almost everybody has been on lots of different dietary attempts and somewhere along the line they've been doing calories.

想一想,如果世界上还有一群人,真正关注卡路里的话,那就是肥胖人群,因为那些参加减肥项目的人中,很少有人是第一次参加,几乎人人都进行过多次不同的饮食控制,他们也尝试过计算卡路里减肥

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

"It is relatively cheap for what you get, and it has been in existence for 60 years, so it is well established as a health service and it works,".

VOA: standard.2009.09.24

I want to illustrate one of the reasons why it has been so difficult to get a grasp on the hair cells in the inner ear.

我想用图例为大家说明一下,为什么难以捕获内耳中的毛细胞。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

So far,he says it has been relatively mild.

VOA: standard.2009.05.14

So, if language seems exhausted because it's always preceding you, everything has always already been said, there's no new plot to be had, the world is full of stock phrases, how do you use them to embody an experience that seems fresh to you?

所以，如果因语言，在你之前就存在，而它就显得枯竭，如果一切都已经被说过，如果已没有新的情节可供创造，如果世界一直充满陈腔旧调，你如何能够用它们,呈现出一个崭新的体验？

耶鲁公开课 - 1945年后的美国小说课程节选

Lee Smith says it has always been hard for Americans to understand exactly why peace in the Middle East is so elusive, and why violence and terrorism are so pervasive and persistent in the Arab world.

VOA: standard.2010.03.18

They are relatively competent, they speak English and if the diagnosis can be made on line they'll do it, and all of these services are now been provided and so service sector has become a fast growth in India contributing to higher growth rates.

这个方面印度人力更有竞争力，因为他们会说英语,只要医生可以在线诊断,他们就能提供好该项服务,这些服务现在都有,因而促进了印度服务行业飞速发展,从而也使印度经济更快速增长。

普林斯顿公开课 - 国际座谈会课程节选

"And what's a little surprising about that is that you don't come to Congress to make friends because if you do, you're not coming to be independent and have your own mind and so what a great surprise it has been to make such great friends."

VOA: standard.2010.08.07

It's been so long that we've been planning and work has been so stressful lately.

我们计划好久了，最近的工作又有这么大的压力。

I've been 实战 - SpeakingMax英语口语达人

So all has been given. It's simply Israel's choice to take it or not.

那么，一切都被陈明了这仅仅是以色列人是否接受它的问题。

耶鲁公开课 - 旧约导论课程节选

So, a lot of it has been word of mouth.

所以很多都是口口相传。

斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选

So, it seems to me,that Western civilization,ever since, has been a composite of these two traditions.

因此,在我看来,西方文化从那时至今,都是两种传统的复合物

耶鲁公开课 - 古希腊历史简介课程节选

Obviously you are here, so it has some impact for you, I've been a lot of trips.

既然你来了，肯定是,这个训练影响了你，但你知道，我参加了太多的远足了。，You，know，as，if…

普林斯顿公开课 - 人性课程节选

Because it has been said that each American soilder cost us one million dollars a year Ambassodor is so much cheaper.

有人说一个美国士兵每年要花费一百万美元,相比之下，大使是如此廉价。

普林斯顿公开课 - 国际座谈会课程节选