表达没错。很正式。但好像应在HAS 和REDUCE 之间加上 been 才正确。PRICE HAS BEEN REDUCED.WE HAVE REDUCED THE PRICE.
price drop 2 usd to 10 usd
The price was reduced by 2 yuan.
lower the pricebring the prize downcutting price
价格降了18美元:Prices dropped by 18 U.S. dollars原句的语法并没错误，只是用得不太地道而以。
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