Ключевые слова: alternative, belt, bio, bioenergy, biomass, bunch, cloesup, closeup, eco, ecological, ecology, economy, emission, energy, environment, factory, fireplace, food, fuel, granulated, granule, heap, heat, industrial, industry, machine, manufacturing, natural, operation, pellet, pet, pile, pressed, recycling, renewable, saving, sawdust, warm, winter, winter season, wood, wooden,