Ключевые слова: background, bangle, bright, bulb, business, collection, concept, conservation, conserve, creative, eco, ecology, economical, efficiency, electric, electricity, energy, environment, equipment, evolution, fluorescent, generation, glass, glowing, hang, idea, illuminated, illumination, incandescent, innovation, inspiration, invention, lamp, leadership, led, light, nature, power, progress, recycle, recycling, save, saver, saving, set, shine, shiny, solution, technology, tungsten,