Ключевые слова: barbed, blue, border, cable, closed, clouds, current, danger, details, electric, electrical, electricity, enclose, enclosure, energy, engineering, equipment, fence, focus, high, hurt, industrial, industry, isolated, keep, line, locked, metal, painful, pointy, power, prohibited, protection, rust, safe, safety, security, shallow, sharp, sky, steel, structure, surveillance, threat, voltage, wire, wired, work,