Ключевые слова: advice, background, blue, board, buoy, circle, danger, day, emergency, equipment, evening, first, grass, green, hanging, help, lake, lawn, life, lifebuoy, lifeguard, marsh, object, palm, park, pond, pool, preserver, protection, public, red, rescue, ring, rope, round, safe, safety, security, side, sign, singapore, summer, swimming, torus, travel, tree, useful, water, white, wooden,