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| 31. | the infinity of the universe |
| 宇宙的无垠 |
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| 32. | universe,structure and properties of |
| 宇宙的结构和性质 |
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| 33. | the riddle of the universe |
| 宇宙之奥妙 |
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| 34. | Einstein universe |
| 爱因斯坦宇宙 |
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| 35. | Friedmann universe |
| 弗里德曼宇宙 |
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| 36. | universe telescope |
| 宇宙仪 |
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| 37. | the immensity of the universe |
| 宇宙的浩瀚无垠. |
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| 38. | closed universe |
| 闭宇宙 |
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| 39. | sidereal universe |
| 恒星宇宙 |
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| 40. | finite universe |
| 有限宇宙 |
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