feed control lever

例句：

1. 1. Thefarmer used a feed control lever to regulatethe amount of fertilizer applied tothe crops.
   农民使用一个喂食控制杆来调节对农作物施加的肥料量。
2. 2.The engineer designed a new feed control leverthat would make it easier for farmers tomanage their livestock.
   工程师设计了一个新的喂食控制杆，使农民更容易管理他们的牲畜。
3. 3. The veterinarian recommendedusing a feed control lever to prevent overfeeding of pets.
   兽医建议使用喂食控制杆以防止宠物过度喂食。