powedered emery

例句：

1. 1. The engineer used a powedered emery to smooth the surface of the metal.
   工程师使用抛光粉来平滑金属的表面。
2. 2.The car was polished with a powedered emery to make it shine.
   汽车被用抛光粉打磨，使其闪闪发光。
3. 3.The artist used a powedered emery to create a smooth finish on the painting.
   艺术家使用抛光粉在画作上创造出光滑的完成效果。