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单词 ratio
释义 ratio /5reiFiEu/
n.比, 比率 【同】proportion; quota; rate 【例】The probability of anything happening is inverse ratio to its desirability. 一件事发生的可能怀与它受欢迎的程度成反比。The ratio of schoolboys to schoolgirls is 2 to 1. 男学生和女学生的比例是2比1。"
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