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钻车 : 195 phrases in 14 subjects |
Architecture | 6 |
Automobiles | 5 |
Bridge construction | 1 |
Coal | 1 |
Drilling | 13 |
Earth sciences | 2 |
Electronics | 6 |
Engineering geology | 6 |
Explosives and Explosive Ordnance Disposal | 6 |
General | 3 |
Hydroelectric power stations | 3 |
Oil / petroleum | 12 |
Technology | 129 |
United Nations | 2 |