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| наблюдение за шаром-пилотом | |||
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| шаропилотное наблюдение | |||
| 气球观 测: 15 phrases in 6 subjects |
| Aviation | 1 |
| General | 1 |
| Meteorology | 2 |
| Military | 2 |
| Technology | 7 |
| United Nations | 2 |
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