Ключевые слова: air, blue, carbon, carbondioxid, chemical, chimney, city, climate, ecology, emission, energy, environment, environmental, evaporation, evening, factory, fog, fuel, global, globalwarming, greenhouse, heating, industrial, industry, infrastructure, landscape, manufacturing, mist, morning, night, plant, pollute, power, power station, powerstation, silhouette, smog, station, technology, tower, town, tree, vapor,