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自标定 : 25 phrases in 10 subjects |
| Air defense | 1 |
| Aviation | 6 |
| Electronics | 4 |
| General | 1 |
| Information technology | 2 |
| Oil / petroleum | 2 |
| Psychology | 1 |
| Technology | 5 |
| Telecommunications | 2 |
| United Nations | 1 |
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