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煤气费 |
gas rate : 67 phrases in 14 subjects |
Automobiles | 4 |
Aviation | 3 |
Electronics | 3 |
Geology | 2 |
Hydroelectric power stations | 1 |
Metallurgy | 17 |
Mining | 2 |
Nursing | 1 |
Oil / petroleum | 8 |
Plastics | 1 |
Space | 5 |
Sports | 1 |
Technology | 18 |
Water resources | 1 |