trials riding
noun🔊/ˈtraɪəlz raɪdɪŋ/
🔊/ˈtraɪəlz raɪdɪŋ/
(also trials biking)
[uncountable] (also observed trials [uncountable + singular or plural verb])
the sport of riding a specially designed motorcycle or bicycle through a course that has objects on the ground, which is designed to test a rider's ability 极限骑行运动（使用特制摩托车或自行车，考验骑行者通过障碍物的能力）