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| 1. | Alternatively, if the star were small, the life-supporting planet would have to have a close orbit round |
| 反之，如果恒星很小，维持生命的行星就要在离恒星很近的轨道上运行， |
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| -- 来源 -- 新概念英语第三册 - From the earth: Greetings |
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| 2. | the five major planets each have their own orbit, but all revolve around the sun. |
| 五星各有各的运行轨道, 但都绕着太阳公转。 |
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| 3. | How many satellite have is put into orbit round the earth. |
| 有多少颗人造卫星已送入绕地球轨道。 |
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| 4. | Alternatively, if the star were small, the life-supporting planet would have to have a close orbit round |
| 反之，如果恒星很小，维持生命的行星就要在离恒星很近的轨道上运行，而且要有极好的条件才能使生命得以发展。 |
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| 5. | How many satellites have been put into orbit round the earth? |
| 有多少颗人造卫星已送入绕地球轨道? |
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| 6. | In recent years a number of communications satellites have been put into orbit. |
| 近些年来, 很多通讯卫星被送上轨道。 |
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| 7. | How many satellite have be put Into orbit round the earth |
| 有多少颗人造卫星已送入绕地球轨道 |
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| 8. | 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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| 9. | How many satellite have been put into orbit round the earth |
| 有多少颗人造卫星已送入绕地球轨道 |
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| 10. | If they had failed to find Gumdrop, the two men in spider would have been stranded in orbit to die when |
| 要是他们找不到橡皮糖，在支架里的两个人，等他们的氧供应用完后，便会在轨道里窒息而死。 |
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