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极化光 : 48 phrases in 9 subjects |
| Agriculture | 1 |
| Earth sciences | 1 |
| Electronics | 25 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 2 |
| Metallurgy | 1 |
| Space | 3 |
| Technology | 12 |
| Water resources | 2 |
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