磨成的用法和樣例：
例句
-
這台機器把麥子磨成麵粉。
This machine crushes wheat grain to make flour. -
我們把小麥磨成麵粉。
We grind up the wheat to make flour. -
他用碾磨機把穀物磨成麵粉。
He used a miller to mill the grain into flour. -
然後，麥子在磨坊里被磨成麵粉。
Next, the wheat is ground into flour at the mill. -
[諺]滴水穿石；只要功夫深，鐵杵磨成針。
Constant dropping will wear away a stone.
