Ключевые слова: 480, adult, architect, architecture, blue, blueprint, builder, building, business, construction, contractor, couple, design, development, drawing, engineer, engineering, foreman, hardhat, hat, helmet, industrial, industry, male, manager, map, meeting, men, oil, paper, people, person, plan, plant, power, professional, project, safety, site, technology, white, work, worker, young,