Ключевые слова: 23 years, 34 years, action, active, activity, adorable, balance, bicycle, bicycling, bike, boy, brother, child, childhood, city, competition, cycle, family, first, friend, friendship, fun, happy, having, helmet, kid, laufrad, learn, little, outdoor, outside, play, protection, push, ride, running, safe, safety, siblings, smile, sport, toddler, together, transport, twins, two, wheels, young,