Ключевые слова: activity, area, building, city, construction, country, design, development, digging, duty, effort, employment, engineering, environment, equipment, excavation, gear, ground, industry, infrastructure, laboratory, landscape, machinery, maintenance, manual, nature, orange, outdoor, profession, progress, project, responsibility, safety, sand, site, skill, sunny, supply, task, teamwork, technician, technique, timing, tools, toolshed, trench, trenching, urban, vest, work, worker, workforce, zone,