Ключевые слова: asphalt, avenue, circle, city, communication, cover, design, detail, dirty, drain, drainage, environment, flow, gray, ground, hatch, heavy, hole, infrastructure, inspection, maintenance, manhole, metal, old, ordinary, rain, road, roadside, round, sanitation, sanity, sewage, sewer, shine, sidewalk, steel, street, town, transport, underground, urban, utilities, waste, water, way, wet,