Ключевые слова: active, activity, adventure, behind, bicycle, bicycling, bike, biking, boy, brother, caucasian, child, childhood, children, country, cycle, cycling, day, exercise, fast, field, friends, friendship, fun, girl, grass, health, healthy, helmet, kid, landscape, leisure, lifestyle, natural, outdoors, race, ride, sister, summer, sunny, together, uphill,