Ключевые слова: aerials, alarm, alert, attention, aware, background, boat, bulb, cable, caution, connection, danger, dangerous, device, electric, electrical, electricity, emergency, equipment, focused, fog, glass, industrial, industry, information, lamp, lantern, light, observe, old, prevent, protect, protection, radio, red, risk, ship, signal, strobe, vintage, warn, white, zone,