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| 21. | No matter how hard they flapped their arms, they could never rise above the earth. |
| 不管他们怎样拼命地挥舞手臂，也无法升到空中。 |
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| -- 来源 -- 高中英语(高二下学期适用) 7 - Further Reading (Ⅱ) The Dream of Flight |
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| 22. | Those satellites travel at 3.07 kilometres a second (1.9 miles), at up to 35,880 kilometres above earth |
| 这些卫星位于地球上方3.588万公里，运行速度为每秒3.07公里，而阿波菲斯行星则预计将在距离地球3.25万公里的地方经过。 |
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| 23. | a belt of charged particles (resulting from cosmic rays) above the Earth trapped by the Earth's magnetic |
| 存在于地球磁场内由宇宙射线引起的围绕地球的高密度粒子放射带。 |
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| 24. | Any body above the earth will fall unless it is supported by an upward force equal to its weight. |
| 地球上任何物体都会落下来，除非它受到一个大小与其重量相等的力支持。 |
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| 25. | The waters increased, and lifted up the ark, and it was lifted up above the earth. |
| 水不断增涨，浮起了方舟，方舟遂由地面上升起。 |
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| 26. | Titan II would boost the spacecraft into a highly elliptical orbit, 160 kilometers above Earth at its |
| 提坦Ⅱ负责将飞船送人高度椭圆型的轨道，该轨道近地距离160千米，远地距离1400千米，并且穿过范爱伦辐射带以获取辐射数据。 |
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| -- 来源 -- 英汉非文学 - 科学史 - kexueshi-dengyue |
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| 27. | This is equal to the free-fall acceleration at a height of 300 km above the earth. |
| 这是在地面上空300km处自由下落的加速度。 |
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| 28. | international space station-- something that has never happened-- can leave the orbiting outpost220 miles above |
| 目前，太空站上的美俄太空人，如果突然生重病或受伤（前迄未发生这种事）可以离开在地球上方220哩处绕轨道运行的前哨基地，并搭俄罗斯和平号太空船在数小时内就可以回家。 |
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| 29. | The best high jumper in the world can lift himself only a few feet above the earth. |
| 世界上最好的跳高运动员只能跳离地球几英尺。 |
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| 30. | "I felt alone, cut off from friends, high above the firm earth. |
| "我感到孤独，与朋友失去联系，离坚实的地面很远。 |
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