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单反射 : 44 phrases in 13 subjects |
| Air defense | 1 |
| Artificial intelligence | 1 |
| Earth sciences | 2 |
| Electronics | 5 |
| General | 1 |
| Geology | 1 |
| Information technology | 1 |
| Metallurgy | 3 |
| Oil / petroleum | 5 |
| Space | 2 |
| Sports | 3 |
| Technology | 17 |
| Telecommunications | 2 |
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