Ключевые слова: active, activity, autumn, back, bicycle, bike, bike riding, biking, caster, child, childhood, children, children learning, closeup, cycle, cycler, cycling, cyclist, depth of field, exercise, extra, fall, happiness, happy, happy kid, happy kids, healthy, help, helping people, kid, kids learning, kids playing, leaning, learn, leisure, lifestyle, little, one, outdoors, park, people, person, play, rear, ride, riding, safety, small, summer, summertime, training, view, wheels,