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| 1. | We sent an unmanned rocket into earth orbit. |
| 我们把一个无人驾驶的火箭送入了地球的轨道里。 |
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| 2. | earth-orbit rendezvous |
| 绕地轨道会合 |
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| 3. | circum earth orbit |
| 地球卫星的环行轨道 |
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| 4. | The Soviet Union put the first satellite into Earth orbit. |
| 苏联发射了第一颗人造卫星进入地球轨道。 |
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| 5. | low Earth orbit |
| 近地轨道 |
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| 6. | He did not go into Earth orbit. |
| 他没有进入地球轨道。 |
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| -- 来源 -- 交互式慢速英语-春季号 - Space Race (II) |
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| 7. | EOP (Earth Orbit Plane) |
| 地球轨道平面 |
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| 8. | One year is one Earth orbit around the Sun. |
| 一年就是地球绕太阳一周的时间。 |
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| 9. | EOR (Earth Orbit Rendezvous) |
| 地球轨道会合 |
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| 10. | Within weeks, the Soviets launched another satellite into Earth orbit, Sputnik Two. |
| 仅在几个星期内，苏联就发射了第二颗卫星??史泼尼克2号??进入地球轨道。 |
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