Ключевые слова: adult, background, builder, building, closeup, company, concept, construction, contractor, cooperation, craftsman, dirty, engineer, expression, factory, glove, greeting, hand, handshake, happy, hard, human, industrial, industry, isolated, job, labor, laborer, machine, male, man, meeting, partnership, people, person, professional, protection, safety, shaking hands, structure, team, teamwork, tool, white, work, worker, working, workplace, workshop, worn,