单词：relative rotating speed
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[00:04.88]Why Are Maps Drawn with North at the Top ? [00:08.15]为什么地图绘制得北方在上？ [00:11.42]Now it is hard to visualize a map that does not feature north at the top [00:15.24]现在很难想像一幅不是北方朝上的地图， [00:19.07]but this was not alw
大学英语自学教程上
You Have a Choice Two trains are traveling side by side and at the same speed along parallel tracks. We are seated in one of the trains, and with us we have a special speedometer that measures their r
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Two trains are traveling side by side and at the same speed along parallel tracks. We are seated in one of the trains, and with us we have a special speedometer that measures their relative speed. Since the trains are traveling at the same speed, the
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Remembering 2001: A Space Odyssey 50 Years Later It was 50 years ago that the science fiction film 2001: A Space Odyssey opened in theaters across the United States. The film, directed by Stanley Kubrick, was based on a book by Arthur C. Clarke. The
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Angela Merkel was born in Hamburg in 1954. She became Germanys first female Chancellor and the first from communist East Germany in 2005. Forbes magazine listed her as the most powerful woman in the world in 2006 and 2007. Western media often dub her
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When a journalist asked the British astronomer Sir Arthur Eddington 有一位记者问英国天文学家阿瑟爱丁顿， if it was true that he was one of only three people in the world who could understand Einsteins relativity theories, 他是不是
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