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详细说明的 : 15 phrases in 10 subjects |
| Agriculture | 1 |
| Commerce | 2 |
| Economy | 3 |
| Electronics | 1 |
| General | 2 |
| Project management | 1 |
| Shipbuilding | 1 |
| Space | 1 |
| Technology | 2 |
| Telecommunications | 1 |
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