Ключевые слова: action, athlete, biker, clone, clones, competition, competitive, copies, copy, copying, creative, creativity, distance, exposure, extreme, fly, hindrance, hurdle, impediment, jump, jumping, man, motocross, motorbike, motorcycle, motorcyclist, motorized, multiple, nature, obstacle, practice, race, racecourse, racetrack, road, several, single, speed, sport, sports, sportsman, technique, techniques, thoroughfare, track, training, tree, wild,