Ключевые слова: alternative, background, bright, bulb, concept, conceptual, conservation, eco, ecology, economy, efficiency, electric, electricity, energy, energysaving, environment, environmental, field, fluorescent, friendly, glass, glowing, grass, green, ground, idea, innovation, lamp, light, lightbulb, low, nature, outdoors, plant, resourceful, save, saving, savings, shiny, spiral, technology, white,