manual threshing

例句：

1. 1. The farmer manually threshed the wheat to prepare it for storage.
   这位农民手动收割小麦，准备储存。
2. 2.Manual threshing is a traditional method of grain preparation in some regions.
   在一些地区，手工收割是一种传统的粮食准备方法。
3. 3.In this manual threshing process, the grains are separated from the husks by hand.
   在这个手工脱粒过程中，谷物通过手与外壳分离。