Ключевые слова: adult, business, button, caucasian, closeup, computer, control, electronic, engineer, equipment, expertise, factory, hand, holding, human, indoors, industry, lifestyles, machine, machinery, males, man, mechanic, men, metal, night, occupation, one, part, part of, person, professional, retail, selective focus, service, skill, standing, steel, technology, tool, touching, transportation, unrecognizable, women, work, working, workshop, young,