Ключевые слова: air, blue, chemical, chimney, co2, cold, dirty, ecology, energy, environment, exhaust, factory, floodlit, fog, fuel, fume, fumes, global, industrial, industry, large, layer, light, nobody, outdoors, pipe, pollution, power, sky, smog, smoke, smoky, stack, station, steam, steamy, stratosphere, substance, technical, tower, toxic, warming, white, winter,