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| 21. | data base of moon rocks |
| 月球岩石数据库 |
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| 22. | close-range moon photograph |
| 月球近距摄影 |
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| 23. | The moon is the smallest one . |
| 月球最 |
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| 24. | drilling on the moon surface |
| 月球表面钻探 |
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| 25. | A Fundamental Survey of the Moon |
| 月球概说 |
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| 26. | physical libration of the Moon |
| 月球物理天平动 |
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| 27. | variation of moon |
| 二均差 -月球运动 |
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| 28. | a mission to the moon |
| 登月球飞行 |
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| 29. | To Get Energy from Moon |
| 月球获得电能 |
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| 30. | The moon eclipses the sun. |
| 月球遮住太阳。 |
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