Ключевые слова: abstract, air, bicycle, bicyclist, bike, biking, bmx, cloud, contrast, cross, cycling, danger, dark, day, downhill, dynamic, extreme, fast, figure, flight, floating, fly, free, freeride, freestyle, helmet, high, hover, jump, leaping, leisure, mountain, orange, pedals, play, ramp, recreation, recreational, ride, risk, silhouette, speed, sport, street, stuntman, sunshine, toned, trial, trick, youth,