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成对能 : 12 phrases in 9 subjects |
| Economy | 2 |
| Electronics | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 2 |
| Nautical | 1 |
| Nuclear physics | 1 |
| Project management | 1 |
| Sports | 2 |
| Telecommunications | 1 |
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