mill general layout

例句：

1. 1. The mill is located in the heart of the town.
   磨坊位于城镇中心。
2. 2. The millstone was used to grind the grain into flour.
   磨石被用来将谷物磨成面粉。
3. 3.The mill has been operating for over a century.
   这台磨坊已经运营了超过一个世纪。