Ключевые слова: air, breath, catalyst, catalytic, chemical, chimney, clean, complex, corporate, corporation, distill, dusk, emission, energy, environment, environmental, evening, factory, fuel, fume, gas, gasoline, global, heavy, industrial, industry, kyoto, manufacturing, metal, or the, petrochemical, petroleum, pipes, plant, pollution, ports, power, process, production, refinery, sky, smog, smoke, station, steam, structure, sunset, technology, toxic,