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| 反应模型: 24 phrases in 12 subjects |
| Aviation | 1 |
| Chemistry | 1 |
| Ecology | 1 |
| Electronics | 2 |
| General | 2 |
| Metallurgy | 2 |
| Nuclear physics | 1 |
| Oil / petroleum | 1 |
| Psychology | 1 |
| Space | 2 |
| Technology | 8 |
| Water resources | 2 |
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