coarse cut file

例句：

1. 1. The engineer used a coarse cut file to smooth the surface of the metal.
   工程师用粗切文件来平滑金属的表面。
2. 2. He sent a rough cut file to his client for review.
   他给客户发送了一个粗略的切割文件供审阅。
3. 3.The company uses a coarse cut file to speed up the production process.
   该公司使用粗切文件来加快生产流程。