Ключевые слова: air, atmosphere, blue, chimney, city, climate, cloud, construction, contamination, danger, ecology, electric, electricity, emissions, energy, environment, evening, exhaust, factory, fuel, generation, heat, high, industrial, industry, pipe, plant, pollution, power, production, sky, smog, smoke, station, steam, sunset, tall, technology, thermal, tower, toxic, urban, vapor, white, winter,