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时差的 : 26 phrases in 13 subjects |
| Air defense | 1 |
| Aviation | 2 |
| Business | 2 |
| Commerce | 1 |
| Economy | 2 |
| Electronics | 2 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 3 |
| Geophysics | 5 |
| Project management | 3 |
| Securities | 2 |
| Sports | 1 |
| Technology | 1 |
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