Ключевые слова: arena, artificial, athlete, athletic, blur, carpet, colorful, colors, compete, competition, course, court, curve, depth, event, exercise, fighting, finish, fitness, floor, foot, game, grain, ground, jogging, marathon, material, middle, outside, perspective, play, public, race, recreation, run, runner, running, soft, sport, sprint, sprinting, stage, start, straight, stripes, surface, textured, track, up,