Ключевые слова: athlete, back, bicycle, bicycling, bike, biker, biking, caucasian, competition, country, creek, crosscountry, cycle, cycling, cyclist, dirt, dirty, downhill, explode, extreme, fast, forest, fun, leg, male, man, motion, mountain, mountain bike, mountainbike, mtb, mud, nature, one, outdoor, race, racer, recreation, ride, sport, sports, summer, swift, track, trail, vacation, view, wheel, woodland,