Ключевые слова: asphalt, asphalting, black, building, business, city, concept, construction, crane, engineer, engineering, equipment, factory, fire, gas, group, highway, industry, labour, life, officer, paving, person, progress, protection, repair, road, roller, roof, safe, safety, shovel, site, staff, street, team, teamwork, technology, together, training, urban, woman, work, worker, workers,