set on a cast

例句：

1. 1. The car was seton a cast to prevent it from moving.
   汽车被固定在了车上以防止它移动。
2. 2. She set her dog on a castto help it recover from its injury.
   她给狗固定了一个夹板，帮助它从受伤中恢复过来。
3. 3. The painterhad to set the canvas on a castbefore starting to paint.
   画家在开始绘画之前必须将画布固定在一个夹板上。