I worked with him over a span of six years.

我和他共事达六年之久。

《牛津词典》

Hessler saw household incomes spike from $250 to more than $800 in a time span of five years.

海瑟亲历了当地农民的家庭收入在五年间从原先的250美元一跃到800美元。

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Experts also said people who averaged half an hour a day of cell phone conversations over a span of 10 years had greater odds of developing cancer.

专家们还表示，持续10年以上平均每天使用手机通话半小时的人罹患癌症的几率较高。

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Here in the U.S., the rate of obesity doubled over a span of 16 years.

VOA: standard.2010.08.10

So one of the reasons there is a huge increase in life span is because people aren't dying of things that they would have in prior years.

寿命范围显著增长的一个原因是,人们不再死于,以前那些致死的东西

耶鲁公开课 - 生物医学工程探索课程节选

Then, a funny thing happened: Within a span of a couple years, citizens had as many video recording devices as police did.

CNN: Could video evidence deceive us?

This represents an average annual growth rate of more than 35% and a four-fold increase over a span of five years.

FORBES: Best Buy To Ride New Service Offerings To $42

New reactor designs aim for a span of 60 years that might be extended to 80.

ECONOMIST: The dream that failed