Ключевые слова: active, activity, athlete, athletic, athletic surface, athletic track, athletics, background, compete, competition, contest, empty, event, exercise, fast, field, football, green, ground, health, healthy, line, narrow focus, no people, nobody, occupation, outdoor, pattern, perspective, race, racetrack, road, rubber, run, running track, soccer, soft focus, sport, start, success, surface, texture, track, way,