Ключевые слова: adult, alternative energy, casual, caucasian, consulting, contemporary, day, document, energy, engineer, environmental conservation, foreman, fuel and power generation, futuristic, generator, hardhat, hold, horizontal, looking, looking up, manager, men, mobile phone, ok sign, outdoors, panel, paperwork, people, plan, planning, portrait, posing, power supply, protective workwear, satisfaction, sky, solar energy, solar panel, solar power station, standing, talking, technology, worker,