Ключевые слова: abstract, architecture, background, beautiful, black, blue, bright, cable, clear, cloud, color, communication, connection, danger, electric, electrical, electricity, energy, environment, ground, high, industrial, industry, light, line, metal, multiple, nature, network, nobody, outdoor, pattern, phone, power, silhouette, sky, steel, structure, summer, supply, technology, telephone, transmission, urban, utility, volt, voltage, white, wire,