per和each用法区别?比如…reducethecapacityby30%foreachmouldsize,because…还是写……forpermouldsize正确?或者还有更好的表达吗?per后面可以加名词复数吗?

Question

per和each用法区别?比如…reduce the capacity by 30% for each mould size,because…还是写……for per mould size正确?或者还有更好的表达吗?per后面可以加名词复数吗?

Answer 1

per 介词 prep.
1.〈拉〉(表示关涉)通过,由
Do you send the goods per rail,or per plane?
你送这个商品是通过铁路还是飞机?
Your car,per Mary,has reached me.
你的车由玛丽给我.
2.(表示根据)依照,根据
You bought goods per list price.
你按照所列价格买商品.
3.(表示比率)(尤指数量,价格,时间)每
These apples cost 40 pence per pound.
这些苹果每磅40便士.
4.每,每一
副词 adv.
1.每次；每个
2.照常；按惯例
形容词 adj.
1.高的；过的；全的
each 形容词 adj.
1.每一,各个的
Each school has its library.
每一所学校都有图书馆.
Each one of us has his own duty.
我们每个人都有自己的职责.
Each boy and each girl works hard.
每个学生都努力学习.
代词 pron.
1.每个; （两个或两个以上的人或物中）各自,各个,每个
There were three students who called and I gave a book to each.
来了三个学生,我发给每个人一本书.
Each of us has a company car.
我们每人都有一辆公司的汽车.
Each of you have to work together with one heart.
你们大家要齐心合力.
The witnesses were each perfectly certain of what they said.
证人们个个对自己所说的话十分肯定.
Peter and Bill each say they came first in the race.
彼得和比尔都说自己跑了第一.
The French and Germans each claimed the territory.
法国人和德国人都声称这块土地是他们的.
We each have our own particular tastes,haven't we?
我们各有所好,不是吗?
副词 adv.
1.每,各自
They both hold each an opinion.
他们俩各执己见.