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This is compared to half of students who had looked for a job by this time two years ago.
VOA: special.2009.06.25
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For example, if you started here and you did all this and you came back here, the average velocity would be zero, because you start and end at the same value of x, you get something; 0 divided by time will still be 0.
例如,如果你从这里开始运动,经过这个过程又回到这里,平均速度就是0,因为初态和末态的位移相同,你得到了什么呢,0除以时间还是0
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By the time we get to 1644, this is the year that Areopagitica appears, we're well into the English Revolution.
到1644年，就是《论出版自由》出版的那一年，我们真正进入了英国革命。
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But by the time he was thirteen years old, he was winning against players two times his size and age.
VOA: special.2010.02.07
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And by this time all educated Roman men were expected to be able to speak Greek, well if possible.
那时所有受过教育的罗马男子,有可能的话，都要会说希腊语。
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Dentists say children should have their first dental visit at least by the time they are one year old.
VOA: special.2009.03.11
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You can't just say it once. You have to try to fill that void by saying it two times and by invoking his father a third time.
你不能只讲一次，你必须说第二遍,并且第三次提到迪安的父亲，来填补中间的空隙。
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By the time he returned to England in October of eighteen thirty-six, he was already a well known geologist and naturalist.
VOA: special.2009.02.25
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That area was controlled by Egypt at the purported time of the Exodus Running north to south, next to that coastal plain, is a region of low mountains.
在出埃及记时期，这个地区被埃及所控制,南北分布，靠近海岸平原，是低矮的山区。
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ROCKFORD: "So what?" ALLEN: "By the time we came out, we looked like the last two passengers on Noah's Ark."
VOA: special.2009.03.09
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I don't believe we'll-- I'll--come close to scratching the surface of what I would enjoy doing, by the time I've died.
我不能相信-,我能推测死时,自己会对什么感兴趣。
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It tells the unusual story about a man who is born old and gets younger as time goes by.
VOA: special.2009.02.20
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It was gradually adopted by other countries through time and the United States didn't officially adopt it until 1900.
随着时间的流逝，它渐渐被,其它国家所采用,美国直到1900年才正式采用金本位制度。
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The study found that those who received lower doses of steroids by mouth spent less time in the hospital.
VOA: special.2010.06.23
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He'll be sold again, by the way, a third time, for $2000.00, in Mobile, Alabama, at the Mobile Slave Jail.
他又将被卖掉,顺便说一下,第三次,他被卖了两千美元,在亚拉巴马州一个流动的奴隶监狱
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As a boy,Carl said he knew if it was time to go to school by the sound of a train.
VOA: special.2009.11.01
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By the time you get to the end of the term, you're going to be dealing with some fairly complex things, so one of the things you're going to see is, we're going to make heavy use of libraries, or code written by others.
当你临近期末的时候，你们将要解决一些,相当复杂的难题，因此你们将会看到的其中一点是，我们要充分利用图书馆，或者别人编写的代码。
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He says looking back thousands of years can help researchers look forward by understanding how a disease changed over time.
VOA: special.2010.06.29
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Well, I think we recognize it all the time, and we recognize it all the time by the way in the writing life.
我觉得我们一直,都了解它的存在,了解的方式主要是通过写作。
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By this time, Jackson had decided that Van Buren would be the best man to follow him as president.
VOA: special.2009.01.01
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By the time Bush asked me to be his WHCF in early 2006, I had already long experience working for the president.
当布什让我做办公室主任时,也就是2006年初，我已经有很长的时间,和他一起工作了。
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By the time John Henry was a young man, he was one of the best steel-drivers in the country.
VOA: special.2009.02.21
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But by the time we finish the end of that line, we are really right in the middle of very regular iambic pentameter.
但当我们读完这一行的时候，我们才真正进入了正常的抑扬格五步格诗。
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By the time he finished high school, Roberto had received several other offers from major league teams in the United States.
VOA: special.2010.04.11
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Some of those kids will need coronary bypass surgery in their twenties; some of them will be blind by the time they're thirty.
这些孩子有的要在二十多岁时,做冠状动脉搭桥手术,有些人在三十岁的时候会失明
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He was adding to his earnings by selling short stories and by working from time to time on movies in Hollywood.
VOA: special.2010.01.10
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So, I'm not going to waste your time by asking what happens if you put it in.
我不会问你们把式子带进去以后怎么算,这完全是浪费时间
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A youngster who develops diabetes in his teens may need a kidney transplant by the time he's thirty."
VOA: special.2010.06.07
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By the time of the American Revolution these are the elements that were known.
到了美国革命的时候,这些元素都已知了。
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Alright. So, since we have these terms defined, we know the frequency and the wavelength, it turns out we can also think about the speed of the wave, and specifically of a light wave, and speed and is just equal to the distance that's traveled divided by the time the elapsed.
好了，我们已经定义了，这些术语，我们知道了，频率和波长，现在可以来考虑,波的速度了，特别是光波的速度，速度等于它走过的距离,除以所用的时间，因为我们。
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