The lectureship is tenable for a period of three years.

讲师这一职务任期三年。

《牛津词典》

You can pay back the loan over a period of three years.

你可以在三年内分期归还贷款。

《牛津词典》

She claimed that he had been stalking her over a period of three years.

她声称，三年来他一直在盯她的梢。

《牛津词典》

The number of Washingtonians grew about three percent during that period while the United States population increased more than seven percent.

VOA: special.2009.03.20

They're not due--the first one's not due until next Monday or Wednesday, so you can pick any three days to do it during that period of time.

第一份作业的截止日期是下周一或三,因此你可以任意选择三天来记录饮食

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

But it's only an effective vaccine in the context where you have people who can go to the doctor's office, or to an urgent care, some kind of medical facility, three times, reliably, at a specified period of time.

但为了保证接种效果,人们必须亲自去诊疗室,或者在急诊室里,使用一些医学设施辅助接种,还需要接种三次,它只在一段时间内有效

耶鲁公开课 - 生物医学工程探索课程节选

Police wanted to speak to him over her murder and he was also wanted in connection with three armed robberies and a racially aggravated assault, all of which were committed in a 12-hour period three weeks before Mrs Bates was killed.

BBC: Farmland search over Marian Bates murder in 2003

The retail sales growth trend continued on a steady decline in February, reaching an almost-flat figure of 0.1% growth in the three month period compared to the same three month period a year ago.

FORBES: For Bond Investors, Sentiment Shifting On Brazil Rates

The first three parameters we look to are rising revenues over the most recent three-year period, rising earnings over the recent three-year period and a relatively low or controlled long-term debt to equity.

FORBES: Rising Revenues, Rising Earnings And Low Debt? Sounds Like Time To Buy Intel And P&G