ratioratioD.J.:[?rei?i?u]K.K.:[?re?o, ?re?i?o]n.1.■比, 比率The ratio of pupils to teachers was 30 to 1.學(xué)生和老師的比率是30比1。

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ratio['rei?i?u; -??u]n.1.■比；比率2.■【經(jīng)濟(jì)學(xué)】(金銀復(fù)本位制中)金銀的法定比價(jià)3.■【數(shù)學(xué)】比例4.■【法律】判決理由vt.1.■以比率表示2.■(照片等)按比例放大(或縮小)at the ratio of…to…按…與…的比率by a ratio of…根據(jù)…的比率in direct ratio按正比例in inverse (或reciprocal) ratio按反比例kill ratio (或rate)【軍事】殺傷率ultima ratio最后的手段(尤指訴諸武力)；最后的斗爭；最后的爭論變形n.ratios

ratioratio[?rei?i?u]n.(pl.ratios)1.■比; 比率; 比例; 傳動(dòng)比2.■變換系數(shù)3.■【經(jīng)濟(jì)】復(fù)本位制中金銀的法定價(jià)in the ratio of four to six四與六之比(4:6)

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詞性變化ratio[?rei?i?u]vt.1.■求出比值, 除, 使...成比例2.■將(相片)按比例放大[縮小]