Fifty percent of road accidents result in head injuries.

50%的公路交通事故致使头部受伤。

《柯林斯英汉双解大词典》

I call them at weekends when the rates are down fifty percent.

我在周末话费五折的时候打电话给他们。

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Event sequencing for example is nearly fifty percent faster.

例如，事件排序的速度快了近百分之五十。

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And,the World Health Organization says asthma rates are increasing worldwide by an average of fifty percent every ten years.

VOA: special.2009.07.28

From the standpoint of your genes, you dying for the life of three brothers is an excellent compromise 50% because the genes replicate by fifty percent more.

从你自身基因的角度看，你为了三个兄弟牺牲自己,是非常好的折中,因为基因复制超过。

耶鲁公开课 - 心理学导论课程节选

They only capture fifty percent of their marginal benefit.

他们只能得到50%的边际收益

耶鲁公开课 - 博弈论课程节选

Fifty percent said it was not a mistake, compared to 45 percent last month.

CNN: Poll: U.S. can win war, but won't

According to the African Development Bank, youth unemployment in Swaziland is currently over fifty percent.

CNN: Sex worker: I sleep with five men a day just to eat

Small businesses drive approximately fifty percent of GDP and sixty-five percent of new job creation .

FORBES: How Would a Payroll Tax Reduction Impact Your Business?