Ключевые слова: abstract, background, bacteria, bathroom, blur, blurred, business, clean, customer, drink, drip, drop, environment, equipment, faucet, flow, flowing, hand, healthy, inside, kids, light, liquid, metal, mom, mother, motion, open, people, person, pipe, pouring, protect, save, school, silver, sink, splashing, steel, stream, student, tap, uniform, urban, valve, virus, washbowls, waste, water, wet,