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polar : 99 phrases in 27 subjects |
| Aerodynamics | 3 |
| Astronautics | 6 |
| Aviation | 12 |
| Card games | 1 |
| Chemistry | 6 |
| Construction | 2 |
| Diplomacy | 1 |
| Earth sciences | 1 |
| Electronics | 2 |
| Environment | 4 |
| General | 31 |
| Informal | 1 |
| Information technology | 3 |
| Mathematics | 2 |
| Metallurgy | 1 |
| Meteorology | 4 |
| Military | 3 |
| Navigation | 2 |
| Oil and gas | 1 |
| Physics | 1 |
| Polymers | 1 |
| Space | 1 |
| Technology | 4 |
| Transport | 3 |
| United States | 1 |
| Veterinary medicine | 1 |
| Zoology | 1 |