Ключевые слова: air, architecture, barcelona, blue, building, business, chimney, coal, column, construction, ecology, energy, engineering, environment, equipment, factory, fumes, gas, high, industrial, industry, lighthouse, metal, oil, pillar, pipe, pipes, plant, pollution, power, production, refinery, rocket, sky, smoke, space, spaceship, stack, station, steel, structure, tall, technology, white, wind,