马背

例句：

1. 1. He rode his horse back to the stables.
   他骑他的马回到马厩。
2. 2. The horse was ridden back to the pasture.
   那匹马被牵回牧场。
3. 3. She sat on her horse and admired the sunset.
   她坐在她的马上欣赏日落。