Ключевые слова: alternative, celsius, climate, cloud, cold, degree, design, electric, electricity, element, energy, environment, equipment, flat, generator, graphic, green, heat, hot, icon, illustration, industry, instrument, isolated, light, measurement, meteorology, object, power, renewable, set, sign, summer, sun, sunlight, sunshine, symbol, technology, turbine, warm, weather, white, wind, windmill, yellow,