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India,for example, has promised to cut emissions by at least twenty percent from two thousand five levels by two thousand twenty.
VOA: special.2009.12.26
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And he defined the average in terms of not the sum divided by two, but he chose the geometric mean.
鲍林定义平均并不是,简单相加在除以二，他选择几何平均。
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He started out by observing that all of us, all human beings are governed by two sovereign masters: pain and pleasure.
边沁通过观察得出，所有人类均受两大至高无上的因素所支配：,痛苦与快乐。
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Another report showed that the Social Security trust fund is expected to be out of money by two thousand thirty-seven.
VOA: special.2009.05.15
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In fact, there are some very old books that show this as the average, the sum divided by two arithmetic mean, but the modern practice is to use the geometric mean.
事实上，一些很老的书籍上,平均的定义就是算数意义的，总的来说被分为两种算数意义，但现代我们多用几何意义。
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Without new treatments,the W.H.O.says, the number of new cancer patients could reach twenty-seven million a year by two thousand thirty.
VOA: special.2009.03.02
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Linear algorithms tend to be things where, at one pass-through, you reduce the problem by a constant amount by one. If you reduce it by two, 1 it's going to be the same thing.
有问题么？,线性复杂度的算法，当进行了一个,常量级步数的操作的时候，将问题的规模缩小了一个。
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The delegates in Rome promised to continue efforts to reduce by half the number of hungry people by two thousand fifteen.
VOA: special.2009.11.23
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By two, by two, by two, and here it just conceptually is why this thing doesn't infinitely loop.
除以2，除以2，除以2，这里只是概念性地说明这一,过程为何不会无限循环。
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One of the U.N.Millennium Development Goals is to reduce the under-five death rate by two-thirds by two thousand fifteen.
VOA: special.2009.09.28
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A stranger with a flair for cocktail party descriptive prose might have commented that the room, at a quick glance, looked as if it had once been tenanted by two struggling twelve-year-old lawyers or researchists.
一个鸡尾酒派对的调酒师,也能看一眼就对这件房子作出评论，他会看得出房间曾被两个奋斗的,12岁的律师或研究员租过。
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He says if money is available, Ares Five could be ready for a test flight by two thousand seventeen.
VOA: special.2009.12.30
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Double that, times by two, this is the money I will be making in one month.
再翻倍，乘以二，这将是我在一个月赚到的钱。
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By two thousand seven,however, the numbers were down to less than ten percent of boys and only eight percent of girls.
VOA: special.2009.07.06
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From 1983 to the present as you just said, the economy has a long period of smooth, robust expansion interrupted by two very mild recessions.
第二时期是从1983年至今，正如你所说，经济长时间处于,平稳强健的发展状态,而只出现了两次轻度衰退。
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"There is increased evidence that it helps shorten the duration of the common cold sometimes even by two to three days."
VOA: special.2011.04.20
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The first paper is going to ask you to write about one short poem; the second will ask you to write about two or more poems, or poems perhaps by two authors, or perhaps a poem and some other kind of text or image.
第一篇论文会要求你们介绍一篇短诗;,另一篇则是要求描述几首诗，或者是任意两位作者的诗，又或者是一首诗以及一篇课文或者一幅图画。
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The aim is to bring primary school education to all girls and boys worldwide by two thousand fifteen.
VOA: special.2010.05.20
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It was about four feet by two-and-a-half feet.
长约四英尺宽约两点五英尺。
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The group says the cremation rate is expected to increase to almost fifty-nine percent by two thousand twenty-five.
VOA: special.2009.12.11
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If you have a bond with an interest rate of 4.375% -that's not an easy one to divide by two but you would get half of that every six months until maturity.
如果你持有一种利率为4.375%的债券,这个数除以2有点难算,而在债券到期前,每半年你能得到4.375%一半的券息
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A national team led by two doctors at the University of California, Davis,studied hospital records from thousands of children with head injuries.
VOA: special.2009.10.28
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It's a simple two by two game.
这是一个简单的二对二的博弈
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The Ford Motor Company refused government aid and is working to become profitable again by two thousand eleven.
VOA: special.2010.01.01
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I got a better horoscope from The Onion actually: "Riding in a golf cart with snow cone in hand, you'll be tackled by two police officers this week after matching a composite caricature " of a suspected murderer."
我在《洋葱报》上看到的星座运程更妙：,“别一手拿着刨冰一手开着高尔夫球车，否则本周你会被两名警官逮捕,因为你的长相,和谋杀疑犯的模拟肖像很像“
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One of the United Nations Millennium Development Goals for two thousand fifteen is to reduce death rates in young children by two-thirds.
VOA: special.2009.10.19
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Milton is able in this speech to combine, I think, for the first time the two associations borne by that Latin word pastor.
弥尔顿能够在这场演说中，第一次把拉丁语牧师的两种联想结合起来。
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Delegates from around the world have agreed on a new plan to end the worst kinds of child labor by two thousand sixteen.
VOA: special.2010.05.17
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So, what I want to do is make a new engine which really just consists of two engines, side by side.
我们先构造一个,由两个热机组成的热机，并排排列。
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Take the difference of the two velocities and divide by the difference of the two times, and you've got the acceleration.
求出速度的差值,除以时间的差值,这样就能得到加速度
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