本帖最后由 WOWWOW 于 2020-10-16 00:34 编辑 4 ]+ @" ^4 ]) Q O
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悬赏3000米:proportion和ratio在概念上有何区别呢?
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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。 / ]$ T2 y4 P# M/ W" y. r$ \8 T" R
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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。
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顺带讲解 proportion和percentage 9 R! ?+ F: A0 H0 K
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