Ключевые слова: architecture, background, building, cityscape, clear, concept, concrete, construction, daytime, development, durable, duty, effort, engineering, environment, equipment, gear, hard, hat, heavy, helmet, industrial, industry, infrastructure, job, labor, mechanical, outdoor, performance, practical, professional, progress, project, protective, red, reliable, safety, site, sky, task, technician, tool, under, urban, utility, wall, work, worker,