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断 挖 : 60 phrases in 9 subjects |
| Bridge construction | 4 |
| Electronics | 1 |
| Engineering geology | 4 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Hydroelectric power stations | 3 |
| Metallurgy | 2 |
| Rail transport | 2 |
| Shipbuilding | 1 |
| Technology | 42 |
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