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21. | There are many artificial satellites orbiting around the Earth. |
| 绕地球运行的人造卫星有许多。 |
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-- 来源 -- 综合英语第3册 - Unit 6 Popular Science Text B |
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22. | an imaginary line around the Earth parallel to the equator. |
| 围绕地球与赤道平行的假想线。 |
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23. | the month depends on the moon's journey around the earth. |
| 月则是靠月亮绕地球公转计算的。 |
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24. | The players in our drama were now scattered around the earth. |
| 我们这出戏的角色现在分散在世界各地。 |
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25. | Wrapped around the Earth is an invisible field of energy. |
| 我们的地球是被一种无形的能量包裹着的 |
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26. | People once held that the sun went around the earth. |
| 人们一度认为太阳是绕着地球转的。 |
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27. | situated beyond the moon or its orbit around the earth. |
| 位于月亮或其绕地球的轨道之外。 |
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28. | Once in space, the spacecraft went into orbit around the Earth. |
| 一旦进入太空,太空船就进入环绕地球运行的轨道。 |
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29. | Nitrogen forms about 80% of the air around the Earth. |
| 围绕地球的大气80%是氮气。 |
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30. | The sun disturbs the elliptical motion of the moon around the earth. |
| 月球绕地球的椭圆运动受到太阳的干扰。 |
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