Ключевые слова: air, atmosphere, building, business, chemical, cloud, coal, color, concept, danger, dioxide, ecology, electric, electricity, emission, energy, environment, environmental, factory, fuel, generation, global, industrial, industry, landscape, manufacturing, pipe, plant, pollution, power, refinery, river, roof, sky, smog, smoke, smokestack, spherical, station, steam, structure, technical, technology, tower, toxic, vapor, voronezh, warming, waste, water,