Ключевые слова: amusement, aqua, aquapark, clean, curve, gas, gasoline, gray, industry, iron, isolated, ladder, line, long, metal, new, oil, old, outdoor, park, part of, petroleum, pipe, pipeline, pipes, piping, pool, production, sky, slide, spiral, spiral staircase, steel, summer, sun, sunlight, supply, swim, tube, water, wet,