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加 速 度波 : 13 phrases in 8 subjects |
| Aviation | 1 |
| Ecology | 1 |
| Explosives and Explosive Ordnance Disposal | 2 |
| General | 1 |
| Latin | 1 |
| Navigation | 1 |
| Oil / petroleum | 4 |
| Technology | 2 |
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