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filter wedge : 17 phrases in 10 subjects |
| Aviation | 1 |
| Cinematography | 1 |
| Construction | 1 |
| Ecology | 1 |
| Medical | 4 |
| Natural resourses and wildlife conservation | 1 |
| Technology | 3 |
| Telecommunications | 1 |
| Transport | 1 |
| Радиоактивное излучение | 3 |
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