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线 扫描 机 : 16 phrases in 10 subjects |
| Agriculture | 1 |
| Air defense | 1 |
| Artificial intelligence | 2 |
| Aviation | 2 |
| General | 1 |
| Metallurgy | 1 |
| Space | 3 |
| Sports | 1 |
| Technology | 3 |
| Textile industry | 1 |
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