Pirates have attacked at least sixty-one ships so far, compared to six for the same period last year.

VOA: special.2009.04.25

A cohort study means you take the same group of people and follow them every five years for that period of time.

定群研究意味着你只有一组研究对象,然后在研究期间每五年进行一次记录数据

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

That's for a different lecture So, anyway, thermodynamics dates from the same period as getting fossil fuels out of the ground. It's universal.

这是另一堂课的内容,不管怎么说,热力学与开采化石燃料,起源于同一时期，它是普适的。

麻省理工公开课 - 热力学与动力学课程节选

Republicans have a plan to insure three million more Americans at cost of $60 billion for the same period.

VOA: standard.2010.02.25

In the same way that being a child is a phase you can go through for a period of time and then cease to be.

就像是作为儿童存在一样也是一个阶段,会经历一段时间而后停止。

耶鲁公开课 - 死亡课程节选

Others who want to graduate in three years must pay for the same education as four-year students, but in a shorter period of time.

VOA: special.2009.07.23

He found it and it was the excavation of the site of Mycenae which was soon followed by the excavation of other sites from the same period that made it possible for people to talk about this culture, even before they could read the script.

他找到了迈锡尼城,并且这次的挖掘之后,又引发了一轮对于,同时期其他遗迹的挖掘活动,而这也让人们在破解他们的文字之前,有了探索此文明的可能性

耶鲁公开课 - 古希腊历史简介课程节选