feed rollers

例句：

1. 1. The feed roller is used to mix the grain with water.
   喂食辊用于将谷物与水混合。
2. 2.The feed roller helps to evenly distribute the feed throughout the barn.
   喂食辊有助于均匀地将饲料分布在谷仓中。
3. 3.The feed roller was designed to reduce the amount of time spent feeding the animals.
   喂食辊的设计旨在减少喂养动物所需的时间。