赢得自行车赛的骑手高举双臂庆祝胜利。

The winning ___rider in the bicycle race raised his arms in victory.

优秀的骑手为锦标赛与他们的马匹一起刻苦训练。

Good ___riders train hard with their horses for the championship.

所有摩托车骑手都必须佩戴合适的安全装备。

All motorcycle ___riders are required to wear proper safety gear.