Agrillo's team found that mosquitofish can discriminate between numbers up to 16, but only if the ratio between the fish in each shoal was greater than 2:1.

阿格利罗的团队发现，食蚊鱼最多可以分辨大到16的两个数字的大小，但前提是每个鱼群中鱼的比例大于2:1。

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The ratio between the two sides is one to four.

双方人数对比是一对四。

《新英汉大辞典》

For the eccentric model, Hipparchus found for the ratio between the radius of the eccenter.

对于偏心模型，希帕克斯发现了偏心半径之间的比率。

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And so, there is the distinction between fixed schedules versus ratios, variable schedules and ratio versus interval.

因此，在固定时程与变化时程之间,以及在比率与间隔之间，存在着一些区别。

耶鲁公开课 - 心理学导论课程节选

The difference between ratio is a reward every certain number of times somebody does something.

比率强化意思是,间隔一定比例才给予奖励。

耶鲁公开课 - 心理学导论课程节选

This number dictates the ratio between the pen cap and visible portion of the barrel.

FORBES: Tibaldi Pens for Bentley

But as an object gets smaller, the ratio between its surface area and its volume rises.

ECONOMIST: Small wonders

On September 30, 2011, the ratio between the price of gold and the CRB Index was 3.217.

FORBES: This Economic Recovery Is Surely Different: It's FUBAR*