Ключевые слова: active, activity, bicycle, bicycling, bike, biking, boy, care, caucasian, cheerful, child, childhood, cycle, cyclist, day, enjoying, enjoyment, exercise, fun, happiness, happy, healthy, joy, kid, learn, leisure, lifestyle, little, male, nature, outdoor, outside, park, person, play, pleasure, recreation, ride, rural, safety, small, smile, smiling, son, sport, spring, summer, sunlight, sunny, toddler,