Ключевые слова: active, activity, alone, background, balance, bicycle, bike, boy, child, childhood, children, cycle, exercise, fall, fast, fitness, fun, game, handle, handlebar, healthy, hobby, isolated, kid, learning, leisure, lifestyle, motion, outdoors, playing, recreational, ride, safety, schoolboy, scooter, slow, small, speed, sport, spring, sun, transport, transportation, urban, vacation, vehicle, village, warm, wheel, young,