Ключевые слова: active, activity, bicycle, bike, biking, boy, brakes, child, childhood, cycle, drive, exercise, fitness, frame, fun, gear, healthy, kid, leg, leisure, lifestyle, little, new, outdoor, outside, park, pedal, person, recreation, ride, road, safety, seat, small, speed, sport, study, summer, sunlight, tire, tour, transport, transportation, travel, wheel, white, young,