Ключевые слова: action, active, activity, alley, blades, boy, brothers, child, childhood, childish, daytime, exercise, family, foot, fun, happiness, health, helmet, horizontal, kid, morning, motion, move, movement, outdoor, park, person, pretty, race, recreation, ride, road, roller, roller skates, run, safety, siblings, skater, skates, skating, speed, sport, sportive, spring, summer, sun, twins, two, wheels,