ratio
[ˈreɪʃioʊ]
n.
比，比率;
比例;
系数;
vt.
求出比值，除，使…成比例;
将（相片）按比例放大[缩小];
例句:
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Measure your waist-hip ratio while standing relaxed and naked.
来自BBC
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I wish they would have included the energy ratio.
来自SA
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In 1978 there were 884 students at a lecturer/student ratio of 1:15.
1978年有884名学生，师生比为1比15。
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The adult to child ratio is 1 to 6.
成人与儿童的比例为1比6。
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What is the ratio of men to women in the department?
这个部门的男女比例是多少？
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There is a similar ratio for Magnesium to Calcium.
来自SA
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The ratio of pupils to teachers was 30 to 1.
学生和老师的比率是30比1。
来自《权威词典》
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The ratios of 1 to 5 and 20 to 100 are the same.
1与5之比和20与100之比相同。
来自《权威词典》