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| 次反应: 52 phrases in 15 subjects |
| Agriculture | 8 |
| Automobiles | 8 |
| Aviation | 1 |
| Chemistry | 2 |
| Ecology | 3 |
| Electronics | 4 |
| Explosives and Explosive Ordnance Disposal | 3 |
| General | 1 |
| Metallurgy | 4 |
| Plastics | 2 |
| Polymers | 1 |
| Securities | 1 |
| Space | 2 |
| Surgery | 3 |
| Technology | 9 |
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