单词：time horizon
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2. Advice 1. Could you give me some advice on how I can make up for the time I've lost? 2. I like your advice about my research. 3. What would you advice? 4. What would you do if you were in my shoes? 5. I would appreciate your advice. 6. I think yo
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These discoveries raised the stakes. Here was a planet similar to our own. Mars might not have cities or civilizations. But it could be home to other smaller life forms like microbes. Chris McKay is N
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I think it is exciting. Because it would imply that if life arose independently on Mars. The implication is that life is pervasive throughout the universe. This is why Mars has so obsessed scientists.
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In 2001 a new NASA probe was launched. Called Odyssey, it was sent to Mars to carry out the most detailed analysis ever of the planet’s surface. What it has discovered may be about to answer one of
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But even if there had been water, life doesn't start overnight. Even a simple microbe is the product of complex chemical systems that take millions of years to evolve. Had the water lasted long enough
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Rice had seen the same thing in Iceland, one of the few places on Earth with similarities to Mars. It too is extremely cold, and most of the water is frozen into glaciers. And also like Mars, buried u
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For Mars to have rivers, it must once have had streams, rain, clouds and an atmosphere, a planet just like the Earth today-if these were rivers. They had to be sure. The answers would come in 1998 wit
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William Boynton is professor of planetary sciences at the University of Arizona. And he's dedicated his life to looking for water on Mars. The link between life and water is very strong. Even here in
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The Sun Returns to Little America 阳光再普照至小亚美利加 For days the twilight hours which had numbered less than four in the middle of the long southern night had been lengthening, a little at a time. 在漫长的南方之夜中，能看到
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Joe's monthly phone-Internet-cable TV bill had risen from $90 to $160. He called Time-Warmer's Customers Rule! number. The rep said he could reduce Joe's bill to $110 a month. Joe called Horizon, Time-Warmer's rival. The rep said Horizon's Triple Pla
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Of course, any terraforming is still a long way off. The next few expeditions to Mars will definitely be made by machines. NASA, are sending 2 rovers, capable of travelling over 100 meters a day in se
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Well, hearing that Odyssey had found subsurface water on Mars was enormously exciting for somebody who is involved in planning to send humans to Mars. Water has a number of important uses for us. At t
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Life on Earth is basically proteins and DNA, so we can wonder if there is life on Mars will also be DNA and proteins, the same type of DNA, the same type of proteins. One might think that DNA is such
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But there was something even better. Odyssey may not just have found ice. There may also be liquid water, and that means, there could be living creatures there too. Right now, there might be liquid wa
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But they never got there. The first disappeared into deep space. Another missed its target when its coordinates were confused. One NASA control center was working in metric, the other in feet and inch
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The ground here is permafrost, a mixture of soil and ice frozen together. A group of Russian scientists have teamed up with NASA to drill down into it in search of microorganisms. It's work that's bee
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One of these wavelengths corresponds to hydrogen, another wavelength would be iron. Another wavelength would be oxygen. And so you go to the part of the spectrum you are interested in and you see you'
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中文 英文 缩写 超高速数字用户线路 Very-high-data-rate Digital Subscriber Line VDSL 超级卡 hypercard 超级链 hyperlink 超宽带 ultra-broadband 超媒体 hypermedia 超密集波分复
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I've been waiting for my dreams To turn into something I could believe in And looking for that Magic rainbow On the horizon I couldn't see it Until I let go Gave into love and watched all the bitterness burn Now I'm coming alive Body and soul And fee
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据一项最新调查显示，北京人每天上下班花在路上的时间正在增加，而这主要是由路面上不断在增加的机动车导致的。数据显示，自2007年至今，北京市机动车增加了100万辆，到12月25日，北京市
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