“grind down”簡單造句，grind down造句子

Mills used to use heavy stones to grind down the wheat into flour, now they use more modern machine.

It would be necessary to "grind down" the size of these abutment teeth to prepare them for crowns.

Roll grinder a special lathe used to grind down or resurface rubber applicator rolls.

It won't grind down any finer than this.