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估 计可能 : 20 phrases in 10 subjects |
| Aviation | 1 |
| Business | 7 |
| Earth sciences | 1 |
| Electronics | 1 |
| Explosives and Explosive Ordnance Disposal | 2 |
| Finances | 2 |
| General | 2 |
| Project management | 1 |
| Statistics | 1 |
| Technology | 2 |
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