Ключевые слова: air, atmosphere, blue, building, business, chemical, chimney, city, cityscape, climate, day, ecology, energy, factory, fog, fuel, fumes, funnel, gas, global, gray, heat, heavy, high, industrial, industry, manufacturing, moscow, outdoor, panorama, pipe, pollution, power, russia, silhouette, sky, smog, smoke, snow, stack, steam, substance, sun, sunset, technology, toxic, tube, warming, white, winter,