Since 1951 the proportion of married women who work has grown from just over a fifth to a half.

自1951年以来，在职的已婚女性的比例已经从刚超过五分之一增长到二分之一。

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Scientists have collected samples from crows in order to estimate the proportion of larvae in their diet.

科学家们从乌鸦那里收集了样本，以估计它们食物中幼虫的比例。

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Another cause is that the proportion of people who are trying to lose weight has been increasing over time.

另一个原因是，随着时间的推移，试图减肥的人群比例一直在增加。

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unemployment rate for March. The proportion of jobless Americans has risen steadily since the United States sank into a recession more than a year ago.

VOA: standard.2009.04.02

Your caring, your moral feelings towards other creatures to the extent of the proportion of genes that you share with them.

你的关心，你对他人的道德情感,取决于你和他们拥有多少,相同的基因。

耶鲁公开课 - 心理学导论课程节选

This is the proportion of people who say they will vote-- they would vote for an African American president.

这个比例的人说-,他们会投票给黑人总统。

耶鲁公开课 - 心理学导论课程节选

Add their French-born children, and the proportion of the dark-skinned is a lot higher still.

ECONOMIST: France, race and immigration

The proportion of waste sent to landfill improved by five percentage points, falling to 64%.

BBC: Recycling figures show increase

The proportion of female directors increased from 9.2% in 1999 to 11.7% in 2010.

FORBES: China 30 Under 30 List: Women Entrepreneurs Face More Hurdles Than Men In China - Forbes