Ключевые слова: asia, background, blass, change, child, community, concept, conservation, dirty, drink, drip, drop, eco, ecology, environment, equipment, faucet, flow, glass, h2o, hand, line, liquid, lock, metal, old, outdoor, pipe, plastic, plumbing, poor, preserve, protect, pure, resource, save, saving, school, shortage, student, tap, technical, thailand, tub, tube, valve, water, wet, white, young,