Ключевые слова: active, activity, bicycle, bicycle helmet, bike helmet, bikes, boy, child, dad, dirt path, exercise, exercising, family, father, female, fun, green, helmet, hills, hilly, leisure, little, man, mom, mother, nature, offspring, outdoors, parent, people, recreation, ride, riding, running bike, son, sport, sunlight, sunny, three, training bike, trees, weekend, woman, young,