tool operation

例句：

1. 1. The engineer used a new tool to improve the efficiency of the production line.
   工程师使用一种新的工具来提高生产线的效率。
2. 2. Tool operation is essential for maintaining machinery in good condition.
   工具操作对于保持机械的良好状态是必要的。
3. 3. During the construction phase, proper tool operation can prevent accidents and injuries.
   在施工阶段，正确的工具操作可以预防事故和伤害。