diamond turning

例句：

1. 1. The diamond cutting machine is the most expensive tool in the workshop.
   钻石切割机是车间里最昂贵的工具。
2. 2. She spent hours perfecting her diamond cutting skills.
   她花了很多小时磨练她的钻石切割技能。
3. 3. The diamond cutting process requires great precision and attention to detail.
   钻石切割过程需要极高的精确度和对细节的关注。