Ключевые слова: air, atmosphere, background, building, business, chemical, chimney, city, climate, cloud, construction, contamination, damage, dirty, ecology, energy, environment, environmental, factory, fuel, gas, global, industrial, landscape, manufacturing, metal, nature, night, oil, orange, petrochemical, pipes, plant, pollution, power, production, refinery, silhouette, sky, smog, smoke, smokestack, steam, steel, sunset, technology, tower, toxic, tube, warming,