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| астрономические наблюдения | |||
| астрономическое наблюдение | |||
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天文 观测 : 29 phrases in 7 subjects |
| Astronomy | 3 |
| Aviation | 1 |
| Cartography | 1 |
| General | 5 |
| Geology | 1 |
| Military | 2 |
| Technology | 16 |
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