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自 活化 : 27 phrases in 10 subjects |
| Agriculture | 1 |
| Automobiles | 1 |
| Chemistry | 3 |
| Desert science | 1 |
| Electronics | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Metallurgy | 4 |
| Polymers | 10 |
| Space | 1 |
| Technology | 4 |
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