Ключевые слова: blue, box, cable, city, close, communication, conversion, danger, distribution, electric, electrical, electricity, energy, engineering, environment, equipment, factory, high, industrial, industry, insulator, line, lines, metal, network, old, outdoors, plant, pole, post, power, production, road, sky, space, station, steel, sun, supply, technology, telephone, transformer, transmission, trees, up, urban, voltage, watts, weather, wire,