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下卷 : 53 phrases in 10 subjects |
Agriculture | 2 |
Architecture | 1 |
Construction | 2 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 1 |
Metallurgy | 18 |
Project management | 1 |
Steel production | 3 |
Technology | 9 |
Textile industry | 15 |