ratio:[ 'reiʃiəu ] n.比,比率词形变化:名词复数:ratios 例句与用法:1.The ratio of schoolboys to schoolgirls is 2 to 1.男学生和女学生的比例是2比1.2.Men outnumber women here in the ratio of three... ratio:[ 'reiʃiəu ] n.比,比率词形变化:名词复数:ratios 例句与用法:1.The ratio of schoolboys to schoolgirls is 2 to 1.男学生和女学生的比例是2比1.2.Men outnumber women here in the ratio of three...