单词：discrete information source
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Transcript This is Scientific American's 60-Second Science, I am Cynthia Graber.This will just take a minute. Physicists at the Brookhaven National Laboratory have been able to send information ahead of particle beams racing at nearly the speed of li
Scientific American(二)月
INVENTIONS Computers that use light instead of electricity, smart clothes that can make phone calls and play music, house paints that change colour with the seasons, e-paper and ads that speak to you -- the list of amazing new inventions that seem t
人教高中英语高二
Task 2: Surfing the Net W: Hi Bryan. Hare you doing? You look tired. M：Oh, Im a little burnt out. Ive been surfing the Net for the last few hours. W: Were you doing schoolwork, or was it just for pleasure? M：Well, I wanted to get some information
新视野大学英语：视听说教程 1
People love stories, especially stories with secret information in them. In this episode, we talk about expressions that people use when they telling a story, whether its true or possibly not. These stories might be told by a person who heard it dire
英语博客-北美风情
My own starting point, for what it's worth, was an illustrated science book that I had as a classroom text when I was in the fourth or fifth grade. 我写本书的最初灵感，不管其价值如何，来自我在念小学四、五年级时有过的一
万物简史
Delay - This is the wait time between to specific events, and regarding satellite communications, it is the time it takes for a signal to go from the transmission station up to orbit and through the s
电信英语
Analog - Transmitting information that is characterized by continuously variable quantities (such as with AM or FM). This is different from digital transmission, which is characterized by discrete bit
电信英语
今天我们要学的词是source。 Source, 意思是来源。 Social Security is a reliable income source for seniors, 社会保障是美国老年人可靠的收入来源。 Police have received thousands of tips, according to a source close to the
英语每日一词
By Kari Barber Dakar 21 March 2008 In many African countries, few people have access to computers and the Internet. Experts say this is hindering development and preventing students from being able to compete for jobs. At a conference in Dakar this w
VOA标准英语2008年（三月）
INVENTIONS Computers that use light instead of electricity, smart clothes that can make phone calls and play music, house paints that change colour with the seasons, e-paper and ads that speak to you the list of amazing new inventions that seem to be
高中英语听力人教版第二册
Specializing in authoritative information about medicines Art Chimes | Washington, DC 31 December 2009 Time again for our Website of the Week, when we showcase interesting and innovative online destinations. The global pharmaceutical industry has dev
VOA标准英语2010年(一月)
Lesson 140 Count on 1. You can't count on the weather being fine. 2. Don't count on a salary increase this year. 3. If there's anything I can do, you can count on me! 4. We count on tourism being the major source of income. 5. You can count on me doi
辛沛沛NO-BOOK 辛沛沛口语初级版
All animals communicate. 所有动物都会相互交流。 Crabs wave their claws at each other to signal that they're healthy and ready to mate. 螃蟹相互挥舞钳子表明它们健康并准备交配。 Cuttlefish use pigmented skin cells called
TED演讲教育篇
A: Hi, I am your new neighbor and would like to ask you about a few things. B: Hi, nice to meet you. Sure, ask me anything you need to know. A: So far, everyone that Ive met seems so helpful. B: We all seem to get along pretty well. A: Have you lived
地道英语对话-租房
单身美好 Good to be single You don't have to constantly explainyourself and your decisions 你不必不断地向别人解释自己的所作所为 A decision is a decision, and thats it.If it's something you feel strongly enough about, that should
英语听力广播—Listening
Alan, Canada speaker How do I get my news? Well, when I lived in Canada I got my news from primarily watching television and reading the newspaper. But since I moved over to Asia and started using computers more and more I find that I get my main sou
一起闲话英语-English Chitchat
德国杂志揭示了美国国家安全局黑客入侵手段 LONDON - A German magazine lifted the lid on the operations of the National Security Agency's hacking unit Sunday, reporting that American spies intercept computer deliveries, exploit hardw
英语新闻
Simple Questions Can Help Stop Killer Disease 制止致命疾病的简单方法 Diarrheal disease is one of the leading killers of young children in Africa. While more countries are using vaccines to help prevent outbreaks, health officials are often
VOA常速英语2013年(九月)
1959: The Year That Changed Everything A crowd gathers in New York's Times Square to usher in the New Year, 1959. The importance of what future met them that year is still being debated. How Significant Will 2009 Appear in the Lens of History? Jeff G
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Do you think it could wait? I don't believe That I can do this now I don't know what it is, but It would cost too much pain Not to make this right We need to begin To face the troubles we are in We are waiting outside To source our lives Can I come b
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