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有 效 组 : 31 phrases in 14 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| Chemistry | 1 |
| Economy | 2 |
| Electric machinery | 1 |
| Electronics | 2 |
| Finances | 2 |
| Information technology | 1 |
| Name of organization | 1 |
| Oil / petroleum | 4 |
| Securities | 7 |
| Selective breeding | 1 |
| Space | 5 |
| Technology | 2 |
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