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非 定时间 : 16 phrases in 11 subjects |
| Agriculture | 1 |
| Artificial intelligence | 1 |
| Aviation | 3 |
| Business | 1 |
| Economy | 1 |
| General | 2 |
| Information technology | 2 |
| Metallurgy | 1 |
| Space | 1 |
| Technology | 2 |
| Telecommunications | 1 |
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