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原 发射 : 40 phrases in 14 subjects |
| Agriculture | 1 |
| Aviation | 3 |
| Chemistry | 2 |
| Earth sciences | 4 |
| Ecology | 1 |
| Electronics | 8 |
| General | 3 |
| Geology | 4 |
| Information technology | 2 |
| Oil / petroleum | 1 |
| Physics | 1 |
| Space | 4 |
| Technology | 4 |
| Water resources | 2 |
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