Ключевые слова: asphalt, bristle, broom, brush, city, clean, cleaner, cleaning, cleanup, day, dirt, dirty, driving, dry, dust, environment, equipment, fitness, green, industrial, industry, land, machine, machinery, motion, nature, neat, objects equipment, part, purity, revolving, road, scene, scrub, service, sidewalk, spring, street, sunlight, sweeping, technology, tractor, traditional, transportation, turning, urban, washing, wheel, working,