Ключевые слова: abstract, activity, athletic, background, beautiful, blue, children, clean, close, color, competition, contest, course, design, equipment, exercise, field, floor, ground, indigo, maintenance, orange, outdoor, park, plastic, play, playground, race, racetrack, rainbow, recreation, red, rubber, safe, safety, soft, sprint, stadium, start, surface, taiwan, texture, tool, track, violet, wall, wallpaper, work,