Simone
reduce to “降低到……，减少到没或……”，介词to后面接的是最终的结果，也就是最后的位置或程度。 例如：The temperature is 36 degrees,but it will be reduced to 20 degrees in the night. 现在气温40度，但是悄液夜间将会降低到20度。 reduce by “降低了枯运伍……，减少了“，介词by后面跟降低或减少的具体幅度。例如：He weighed 75 kilos last month, and now his weight has been reduced by 10 kilos.他上个月75公斤，现在减了10公斤。（现在是65公斤）
