Ключевые слова: air, at night, atmosphere, building, chemical industry, chemical plant, chimney, city, cloud, colorful cloud, dusk, energy, evening, exhaust gas, factory, floating cloud, guangdong province, heavy industry, industry, light, maoming city, oil, petrochemical, plant, pollution, power generation, power plant, primary industry, property, refining, residential, residential area, sky, smoke, smoke exhaust, sunset, sunset glow, thermoelectric, town,