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| систематическое наблюдение | |||
| 系统观察: 20 phrases in 9 subjects |
| Aviation | 1 |
| Ecology | 1 |
| Education | 4 |
| Electronics | 2 |
| General | 6 |
| Military | 1 |
| Name of organization | 3 |
| Navy | 1 |
| United Nations | 1 |
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