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未 燃的: 46 phrases in 13 subjects |
Architecture | 1 |
Automobiles | 6 |
Aviation | 6 |
Bioenergy | 1 |
Electronics | 6 |
Energy industry | 1 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 10 |
Geophysics | 1 |
Metallurgy | 2 |
Oil / petroleum | 1 |
Space | 4 |
Technology | 6 |