The shop reduced the price of the shoes ____ 10%.A.to B.at C.for D.by
问题描述：
The shop reduced the price of the shoes ____ 10%.A.to B.at C.for D.by
准确答案为D
但为什么呢?
这里是不是有什么固定用法?
答
D.by
reduce by XX%
降低/减少XX%