compound feed-screw

例句：

1. 1. The farmer used acompound feed-screw to mixthe grain with water.
   农民用复合饲料螺旋将谷物与水混合。
2. 2. The machine usesa compound feed-screw toextract nutrients from the soil.
   这台机器使用复合饲料螺旋从土壤中提取养分。
3. 3.The compound feed-screw isan essential tool for feeding livestock.
   复合饲料螺旋是喂养家畜的必备工具。