pumice polishing grease

例句：

1. 1. The engineer used pumice polishing grease to smooth the surface of the stone.
   工程师使用抛光用浮石油来平滑石头的表面。
2. 2. The machine uses a special lubricant to reduce friction during operation.
   这台机器使用一种特殊的润滑剂来减少操作过程中的摩擦。
3. 3. The car was polished with a special flux, which made it shine like new.
   汽车被特殊抛光剂打磨，看起来就像新的一样。