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分类控制 : 23 phrases in 10 subjects |
| Aviation | 2 |
| Business | 4 |
| Economy | 2 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Finances | 3 |
| Information technology | 1 |
| Metallurgy | 1 |
| Technology | 7 |
| Telecommunications | 1 |
| Textile industry | 1 |
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