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BNC: 0 COCA: 32150

a gas containing methane that can be burned as a fuel, produced by dead plants and animals as they decay沼气

BNC: 0 COCA: 32150
BNC: 0 COCA: 32150
BNC: 0 COCA: 32150
biogas
Fuel and using fuel:biofuel, biogas, biomass...

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