Ключевые слова: black, building, business, chemical, chemistry, chimney, construction, dark, electric, electrical, electricity, energy, engine, engineering, environment, environmental, factory, fuel, gas, generator, heavy, industrial, industry, infrastructure, light, manufacturing, metal, night, oil, people, petrochemical, petroleum, pipe, pipeline, plant, pollution, power, production, refinery, sky, smoke, station, steam, structure, sunset, support, technology, tower, tree, turbine,