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rEDuCE By

reduce by 减至 reduce to 减少

reduce to 是下降到一定的程度,相当于减法的答案reduce by 是下降了,就相当于减数

reduce to、reduce by这两个短语都表示“减少”,其区别是:1、前者用于表示减少的程度.The company must reduce costs to compete effectively. 公司要有效地参与竞争必须降低成本.2、后者用于表示减少的数量.Tests indicate this might

意思是,减少,应用在数量,数目的减少 注意减少体重要用lose 没有特殊的用法,记住reduce to 减少到 reduce by 减少了 就可以了

reduce by 减至be(get) used to doing sth 完全一样

reduce to (意为减少到)reduce by (意为减少了)

fall by和reduce by一样的,都是下降了.下降到应该用fall to or reduce to

reduce on减少到reduce by减少了

1) 习惯用法.就像为什么要用at night,不是in night2) 可以是 a car of her own. 她没要某辆特定的车,所以不用the

意思不一样reduce作及物动词时是降低的意思如:This operation makes sure it will reduce the risk of being cheated.这种方案确保了它将会降低被欺诈的风险.reduce to 降低到…如:The index has reduceed to 80% of it used to be .指数降为原来的百分之八十了.reduce by 降低了(多少)The number of classmates in this semester reduce by5 people .这学期学生人数减少了5人.

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