roughage

例句：

1. 1. The farm needs more roughage to support its livestock.
   农场需要更多的粗饲料来支持其牲畜。
2. 2.The farmer used to grow a variety of crops for his family's roughage needs.
   这位农民过去种植各种作物以满足家庭对粗饲料的需求。
3. 3. The animals need a balanced diet that includes both roughage and protein.
   这些动物需要一种平衡的饮食，包括粗饲料和蛋白质。