hand-driven grinder

例句：

1. 1. This hand-driven grinder is perfect for grinding coffee beans.
   这款手驱动的磨机非常适合研磨咖啡豆。
2. 2. The old man used to use a hand-driven grinder to make his own flour.
   这位老人过去常使用手驱动的磨机来制作自己的面粉。
3. 3. The farmer uses a hand-driven grinder to crush the grains before they are ground into flour.
   这位农民在使用手驱动的磨机将谷物粉碎成面粉之前。