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失时效的 : 29 phrases in 14 subjects |
| Aviation | 3 |
| Business | 2 |
| Commerce | 1 |
| Economy | 4 |
| Electronics | 1 |
| Finances | 1 |
| General | 1 |
| International trade | 5 |
| Management | 2 |
| Metallurgy | 1 |
| Power system protection | 1 |
| Project management | 2 |
| Securities | 1 |
| Technology | 4 |
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