Ключевые слова: aerial, air, barcelona, building, business, chimney, city, climate, clouds, color, construction, ecology, electric, electrical, electricity, energy, environment, environmental, europe, european, factory, flue, fume, global warming, harbor, industrial, industry, landscape, mediterranean, modern, outdoors, pier, pipe, plane, plant, pollution, port, power, power plant, skyline, smoke, smokestack, spain, station, steam, technology, thermoelectric, urban, waste, work,