小测验：选择正确的单词

1. milling machine
   磨削机，缩绒机，铣床
   

1. The steel mill contracted for ten million tons of iron ore.
   炼钢厂立约订购1000万吨铁矿。
2. The college was nothing more than a diploma mill.
   这个学院只不过是个文凭制造厂
3. Com is ground into flour in a mill.
   谷物在磨粉机里磨成粉。
4. I watched them mill the grain into flour.
   我看着他们把谷物磨成粉。
5. The mills of God grind slowly.
   上帝之磨转得慢。

　1个名词解释