stuff grinder

例句：

1. 1. The stuff grinder is used to grind the material for use in making things.
   填料研磨机用于研磨材料，以供制作东西使用。
2. 2.The machine is designed to efficiently grind various types of materials.
   这种机器设计用来高效地研磨各种类型的材料。
3. 3. The stuff grinder was a crucial tool in the early days of metalworking.
   填料研磨机是金属加工早期的关键工具。