Ключевые слова: alarming, area, bad, cation, conditions, danger, day, deadly, drowned, durable, environment, fatal, fear, forbidden, graphic, hazardous, heavy duty, incident, industrial, injured, keep out, lake, location, material, nature, no swimming, not allowed, outdoor, peril, prohibited, property, protect, risk, safety, security, serious, sign, sky, sport, swimmers, swimming, symbol, treat, unacceptable, unsafe, warning, water,