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正 加 速度 : 22 phrases in 9 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Business | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Food service and catering | 1 |
| Geophysics | 3 |
| Nautical | 3 |
| Space | 2 |
| Technology | 9 |
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