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Zora was born at a time of racial tensions between blacks and whites in the southern United States.
VOA: special.2009.02.22
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And you already saw last time there was this relationship between the temperature and volume changes along an adiabatic path.
是条绝热路径，而上次你已经看到,沿着绝热路径温度和体积,的变化有这个关系。
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Isn't it difficult being a mother and a professor at the same time and keeping a balance between the two?
同时做母亲和教授是不是很困难呢？两者之间取得平衡不容易吧？
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Much of the air traffic at that time was between Croydon Airport and Le Bourget Airport near Paris,France.
VOA: special.2010.04.18
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A covalent bond is any time we have a pair of electrons that is shared between two different atoms.
所谓共价键就是我们有两个原子,共用一对电子。
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The placement creates a longer delay between the time the left and right nostrils receive an odor than in sharks with pointed noses.
VOA: special.2010.08.03
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All of that somewhat complicates the picture, but at the same time, I think you can see that there is a connection between those semiotic systems.
这理解起来可能很复杂，但是你们还是能看到,这些符号系统间的一些联系。
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Rebecca Skloot tells this complex story by going back and forth between subjects and time periods.
VOA: special.2010.07.21
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It's not going to be zero this time because we have non zero heat exchange between the system and the environment, right.?
热力学量，但是现在让我们看一下,我们的特殊函数，这次它不会是零,因为系统与外界的热量交换并不是零，对吧？
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But scientists now can show that differences between the time when a shark's nostrils receive smells is more important than the strength of the odors.
VOA: special.2010.08.03
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He splits his time between the two, these two great institutions.
他同时在这两个，伟大的学府任职。
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This time Bella is torn between Edward and Jacob, a werewolf played by Taylor Lautner.
VOA: special.2010.06.14
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But if you look at the tech fund category, the difference between the dollar-weighted and the time-weighted returns--this is over a ten-year period -is 13.4% per annum; that's stunning.
但是如果你关注科技投资基金,十年间,货币加权回报率,和时间加权回报率间的差距,是每年13.4%,这是非常夸张的
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At the time, the adults were between the ages of eighteen and eighty-five years old.
VOA: special.2010.08.03
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And I hope, as you are reading, you notice that chapter opening where once again Dean appears at the door when Sal shows up, and he's totally naked.I hope you noticed that. It's the third time that we see that so there is an eroticism between them.
我也希望，你们在阅读时注意到那一章,就是曾经萨尔去找迪安时，迪安又一次是光着身子，开的门，我希望你们注意到这一点，这是第三次,我们看到这一幕，所以他们对彼此有着性欲。
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However,extreme tension existed between the United States and the Soviet Union at the time.
VOA: special.2009.06.14
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And so the stories couldn't have been simple inventions, and that began a new phase in the story. And, again, to repeat what I said last time, there were certain stunning physical resemblances between what Homer said and what we could see.
所以,神话传说并不只是人们的空想,这样事情就有所不同了,同时,我重复下我上次所说的,《荷马史诗》所描述的世界,在当今确有令人吃惊的实物证据
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"And for young men between fifteen and twenty-seven, it's twelve time the national average.
VOA: special.2009.11.13
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I'm going to talk next week, or next time on Thursday, about the processes that lead to differences between cells.
下周或者下次周四的课上,我会谈谈细胞进行不同演变的过程
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So each hour's time difference between the ship and the starting point marks a ship's progress of fifteen degrees of longitude to the east or west.
VOA: special.2010.07.14
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So at the very top, I've coded up the same thing as before: "Give me an integer between one and ten," or rather, -- "give me an integer between one and ten" -- a little different this time.
所以在顶部，我像之前那样对同样的东西进行编码：,“给我一个1到10的整数“，或者，“给我一个1到10的整数“,这次有点不同。
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"And so they would travel to places where certainly white people in the thirties and forties would not work too much in black communities, because there was so much antagonism between black and white at that time racism toward African Americans.
VOA: special.2010.01.18
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We'll talk about what is the right time and how do you find the right time, how do you find the balance between thinking about painful emotions and when does it slide to rumination, which is not always helpful.
我们会谈到什么是合适的时候,如何找到合适的时候，以及如何在,思考痛苦情绪,和让痛苦情绪滑入沉思到平衡，沉思并非总有帮助。
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"For the first time ever we have the chance to put al-Qaida and related groups between a hammer and an anvil,".
VOA: standard.2009.10.21
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Toni Morrison was speaking for black Southerners in that, I think, fantastic line in her novel Beloved which I know many of you've read because it's taught all the time but there's that marvelous little exchange at one point between Paul D and Sethe.
托尼.莫里森藉由她的小说《宠儿》中,用一句绝妙的句子表达了南方黑人的心声,我知道很多人都已经读过《宠儿》,因为这本书一直被当做教材,不过小说中男女主人公保罗和塞丝,有这么一小段触人心弦的对话
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"Our study showed for the first time a clear difference between oxygen and air in the treatment of acute cluster headache.
VOA: standard.2009.12.17
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And an important thing to remember when we talk about resonance hybrids is that the structure it's not 1/2 the time this structure, and 1/2 of the time this structure, it's actually some combination or some average between the two structures.
而当我们讨论共振杂化的时候,有一件重要的事情需要牢记,那就是这种结构并不是,一半时间处于这种结构的状态，而另外一半时间又变成了这种结构的状态，它实际上是两种结构在,一定程度上的组合或者平均。
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Clinton's visit to Europe began Saturday in Zurich, Switzerland to attend another reconciliation meeting between long-time enemies Turkey and Armenia.
VOA: standard.2009.10.12
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This was eventually taken out, and actually just for your interest, there was no overlap between the time when cocaine was in Coca Cola and lithium was in 7-Up, so there was a few years difference between those two times, but it's amazing to think about what does go into processed foods.
锂最终被去掉了，如果你感兴趣的话，可口可乐中含有可卡因,与七喜中含锂的时代,并没有交集，它们之间还差了几年，但是想一想加工食品里,会加入什么东西还是很令人吃惊的。
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The other thing that I mentioned last time was that there seems to be a really big difference between the expected return on the stock market and the expected return on short-term debt.
上节课提到的另一条内容是,股票市场的预期收益,与短期债券的预期收益,存在着巨大差异
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