Ключевые слова: agriculture, blue, bulgaria, cable, cirrus, construction, country, distribution, ecology, electric, electrical, electricity, energy, engineering, environment, equipment, europe, european, field, grass, green, high, horizon, industrial, industry, landscape, line, meadow, metal, nature, nobody, plant, power, powerlines, pylon, row, sky, steel, structure, sunflower, supply, tall, technology, tower, transmission, voltage, wire,