单词：tracking angular rate without degradation
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And lastly, here's Destin, from Smarter Every Day, 最后是《每天聪明一点点》的德斯丁， talking about the conservation of angular momentum, and, since it's YouTube, cats: 为我们讲述动量守恒，由于是在YouTube上，所以他用
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考试日期： 2013.01.12 类别 Bar chart 题目 The bar chart describes the changes of birth rate in five countries in 1970 and 2000. Summarize the information by selecting and reporting the main features, and make comparisons where relevant. 题目
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Technology Report - Mobile Devices' Location Tracking Raises Privacy Concerns This is the VOA Special English Technology Report. Lawmakers in the United States have expanded an investigation into the use of location-tracking systems on mobile devices
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Tracking Santa with Technology Technology can bring magic to the Christmas season and some fun too! Internet users can find out if they are naughty or nice, follow Santa's journey, and play fun Christmas games. Portable North Pole People can make onl
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Itsremarkable how we are able to build up this picture of whats going on millionsof miles away in the solar system. Its one of the joys of science really, justalmost like a detective picking up on those tiny clues to tell a bigger story. Sothat the b
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One long, two short means it's me. 一长两短代表是我 All clear is two short, one long. 两短一长代表前方安全 And if you got Skitters following you? 如果有迅猎兽跟着你怎么办 You get the first shot. 你开第一枪 Awesome.
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