grind into fine powder

例句：

1. 1. The chef ground themeat finely before cooking it.
   厨师在烹饪之前将肉磨得很细。
2. 2. Thepotatoes were ground into flour for baking.
   土豆被磨成面粉用于烘焙。
3. 3. The carpenter ground the wood to make atable.
   木匠把木头磨成桌子的木料。