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有 效 期为M : 17 phrases in 8 subjects |
| Business | 1 |
| Commerce | 6 |
| Economy | 4 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 2 |
| International trade | 1 |
| Project management | 1 |
| Shipbuilding | 1 |
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