Ключевые слова: automobile, building, car, career, city, clean, cleanup, container, day, dirty, district, drive, dump, ecology, environment, environmental, garbage, highway, industrial, industry, job, junk, litter, machine, men, municipal, outdoor, people, recycling, refuse, road, rubbish, sanitation, service, street, transport, transportation, trash, truck, urban, vehicle, waste, white, work,