winnowing conveyer

例句：

1. 1. The winnowing machine is used to separate grains from the chaff.
   风选机用于将谷物与糠分开。
2. 2. The winnowing machine has a large capacity and can handle a large amount of grain at once.
   风选机容量大，可以一次性处理大量的谷物。
3. 3. The winnowing machine is an essential tool for farmers in grain harvesting.
   风选机是农民在粮食收获中必不可少的工具。