碾磨

例句：

1. 1. The machine is used to crush the grains into flour.
   这台机器用来将谷物碾成面粉。
2. 2. The chef uses a mortar and pestle to grind spices for his dishes.
   厨师使用研钵和研杵来研磨香料为他的菜肴。
3. 3. The miller was grinding grains in the mill when the storm hit.
   当暴风雨来袭时，磨坊里的磨工正在磨谷物。