本帖最后由 WOWWOW 于 2020-10-16 00:34 编辑
悬赏3000米:proportion和ratio在概念上有何区别呢?
The basicingredients are limestone and clay in the proportion 2:1.基本成分是石灰石和黏土,比例為 2:1。
theproportion /ratio of boys to girls in our class is three to one. 我们班男女生的比例是三比一。
顺带讲解 proportion和percentage
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