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| 51. | The sun is a star around which the earth moves . |
| 太阳是一个被地球绕着走的恒星。 |
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| 52. | some people are still not disabused of the old idea that the universe revolves around the Earth. |
| 有些人仍没有从宇宙绕着地球转的老思想中醒悟过来。 |
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| 53. | In recent years a number of communications satellites have been put into orbit around the earth. |
| 近年来大量的通讯卫星被送入环绕地球的轨道. |
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| 54. | I rammed down the earth around the newly-planted tree. |
| 我将新栽的树周围的土捣硬。 |
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| 55. | In 1958,the first US satellite discovered important information about areas of radiation around the earth |
| 1958年美国的第一颗卫星发现了地球周围辐射区的重要信息。 |
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| 56. | orbit of a star in a galaxy does not look like the orbit of a planet around the sun or a satellite around |
| 在星系中，恒星的轨道并不像行星绕太阳，或者卫星绕地球般，因为星系没有单一个主宰的中心物体。 |
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| 57. | The sun is a star around which the earth move. |
| 太阳是一个被地球绕着走的恒星。 |
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| 58. | About 80 percent of the energy transport around the earth is carried by winds in the atmosphere. |
| 围绕着地球的能量传递，有80％左右是由大气中的风完成的。 |
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| 59. | The path of the earth around the sun is oval. |
| 地球围绕太阳公转的轨道是椭圆形的。 |
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| 60. | The force of gravity holds the clouds around the earth and the air in which they float. |
| 就是地心吸力令云层 包围着地球 还有那些有生物在当中飘浮的空气 |
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