单词：linear difference equation
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AMY WEBB, Futurist:We don't stop to think about it, but if you really want to freak yourself out, and you own a cell phone, go to Google and look up your personal information, every single place that you have been since you have been online. We don't
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This is Scientific American's 60-Second Science, I am Cynthia Graber. This'll just take a minute. It might look and even feel like paper, but a new material created by scientists at MIT is designed to be an oil spill super-absorber. This technology d
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Still in Books and Arts; Book Review; The Oxford-Cambridge boat race; Shock and oar; 文艺；书评；牛津-剑桥划艇赛；萁与豆； Blood Over Water: Oxford Versus Cambridge. One Race. Two Brothers. Only One Winner. By David and James Living
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It takes more than shampoo and conditioner to maintain the charm of shiny and manageable hair. See what you should eat to keep those tresses healthy, alluring and strong. 为了维持有光泽且易打理的头发，仅仅用洗发水和护发素是不
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在我们的生活中，死亡是我们所有人必定会遇到的事情，无论是家庭成员还是宠物，甚至是你都将有终结之时。事实上，每分钟世界上大约就有100人死亡。但在人死之时到底会发生什么呢？
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I kissed your sweet lips I floated so high Your eyes looked at mine The world froze in time What is this feeling? I am on cloud nine Guess I'm still reeling From your body Next to mine It's a rush I can't explain Like you shot Something crazy Into my
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