Ключевые слова: active, adventure, balance, bicycle, bike, boy, carefree, cheerful, child, childhood, concentration, confidence, cycling, determination, energetic, enthusiastic, exercise, exploring, fitness, freedom, fun, greenery, happiness, healthy, helmet, joyful, knee pads, learning, motion, nature, outdoor, play, playful, protection, recreation, riding, road, safety, skill, skillful, spirited, sports, summer, sunny, young, youth,