The proportion of Americans living on welfare rose.

靠福利生活的美国人的比例上升了。

《柯林斯英汉双解大词典》

The proportion of regular smokers increases with age.

习惯吸烟的人口比重随年龄的增长而上升。

《牛津词典》

The proportion of small cars on America's roads is increasing.

美国公路上小汽车的比例在逐渐增加。

《牛津词典》

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