jig feeder

例句：

1. 1. The farmer used a jigger to feed his cows.
   农民使用绞盘喂他的牛。
2. 2. The jigger feeder was designed to prevent animals from eating the wrong food.
   绞盘式喂食器被设计来防止动物吃错食物。
3. 3. The jigger feeder was easy to use and made feeding the animals much easier.
   绞盘式喂食器易于使用，使喂养动物变得更容易。