rubbing compound

例句：

1. 1. The car was polished to ashine with the use of this rubbingcompound.
   使用这种研磨膏，汽车被打磨得闪闪发光。
2. 2. The engineer used a specialrubbing compound to remove rust fromthe metal parts.
   工程师使用一种特殊的研磨膏来去除金属部件上的锈。
3. 3. The polishing compound is essential for maintaining the finishon glass surfaces.
   抛光剂对于保持玻璃表面光洁度至关重要。