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坳 : 77 phrases in 11 subjects |
Agriculture | 1 |
Desert science | 1 |
Drilling | 1 |
Engineering geology | 2 |
Explosives and Explosive Ordnance Disposal | 2 |
General | 1 |
Geology | 1 |
Hydroelectric power stations | 1 |
Mountaineering | 14 |
Oil / petroleum | 31 |
Technology | 22 |