Ключевые слова: asphalt, brush, brushes, city, clean, cleaner, cleaning, cleanliness, cleanup, closeup, conceptual, day, dirty, dust, ecology, equipment, garbage, industrial, industry, iron, land, machine, machinery, mechanca, mechanization, metal, modernization, motion, movement, municipal, outdoors, progress, purity, road, rubbish, scrub, service, side, sidewalk, street, sweeper, sweeping, technology, truck, urban, vehicle, view, waste, wheel, work,