Ключевые слова: adult, agriculture, alternative energy, blue, caucasian ethnicity, child, choice, cloud, development, efficiency, electricity, engineer, environment, environmental conservation, environmentalist, equipment, farm, fuel and power generation, generator, grass, green color, growth, industry, innovation, landscape, meadow, men, nature, occupation, one person, outdoors, power supply, propeller, recycling, renewable energy, rural scene, sky, spinning, sunset, sustainable lifestyle, sustainable resources, technology, turning, wind, wind power, wind turbine, windmill, women, working,