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31. | earth based coordinates |
| 地球坐标 |
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32. | evolution of earth |
| 地球演化 |
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33. | Earth Prize Award |
| 地球奖 |
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34. | earth equatorial plane |
| 地球赤道面 |
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35. | Standard Earth (SE) |
| 标准地球 |
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36. | earth-observation platform |
| 地球观察站 |
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37. | history of earth |
| 地球历史 |
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38. | earth central angle |
| 地球中心角 |
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39. | earth science history |
| 地球科学史 |
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40. | receiving earth station |
| 地球接收站 |
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