pony truss

例句：

1. 1. The jockey sat on the pony truss as he rode his horse.
   骑师坐在马鞍上骑着他的马。
2. 2.She had a pony truss made for her new mare.
   她为她的新母马制作了一个马鞍。
3. 3.The pony truss was a popular accessory for riders during the equestrian competition.
   马鞍座是赛马比赛中骑手们非常受欢迎的配饰。