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