Ключевые слова: blocked, broom, building, cleaning, dirty, drain, drainage, engineering, equipment, full, garbage, ground, hard, hole, industrial, industry, job, leaky, line, maintenance, masonry, men at work, occupation, open, outdoor, profession, repair, road, safe, service, sewage, sewer, site, street, suppy, transportation, underground, urban, utility, waste, water, waterway, work, worker, working,