Ключевые слова: africa, analyzing, arm, businessman, choice, climate, concentration, construction worker, copy space, efficiency, electrician, electricity, engineer, expertise, factory, generator, global, glove, hardhat, helmet, innovation, inspector, installing, internet, investment, key, laptop, mid adult, occupation, one person, order, radiation, reflection, repairing, safety, science, security, service, station, success, sunlight, team work, technician, two people, uniform, vitality, working, young adult,