Ключевые слова: adult, adults only, architect, architecture, builder, building, building contractor, business, business man, cheerful, confidence, construction, construction industry, construction site, construction worker, contractor, conversation, development, discussing, discussion, efficiency, engineer, engineering, explaining, factory, foreman, group, happiness, happy, hard hat, hardhat, hat, headwear, helmet, horizontal, industry, male, man, manager, mature adult, occupation, person, professional, safety, smiling, standing, uniform, work, working,