鞍马

例句：

1. 1. The horse was ridden on the back of a horseback.
   这匹马被骑在马背上。
2. 2. The rider sat comfortably in the saddle.
   骑手舒适地坐在马鞍上。
3. 3. The horseman rode through the fields with his horseback.
   骑马的人骑着马穿过田野。