Ключевые слова: air, chemical, chimney, construction, dark, diesel, energy, environment, environmental, equipment, factory, frame, fuel, gas, gasoline, industrial, industry, manufacturing, metal, natural, oil, petrochemical, petroleum, pipe, pipeline, pipes, plant, pollution, power, production, refinery, shiny, sky, smoke, station, steam, steel, storage, structure, sunset, technology, tower, tube, view,