knife grinding machine

例句：

1. 1.This knife grinding machine is very efficient in sharpening knives.
   这台刀具磨床在磨刀方面非常高效。
2. 2.The technicians are using this machine to grind the blades of the knives.
   技术人员正在使用这台机器来磨刀。
3. 3.The knife grinding machine has become an essential tool for kitchen professionals.
   刀具磨床已成为厨房专业人士必备的工具。