In the past,researchers believed that the only cause of C-T-E was a concussion.

VOA: special.2010.09.28

So, imagine growing up in a place like that where the past was so-- was written not only in the death of people that you knew, because everybody you knew died basically.

所以想像在这种地方长大,那种历史真是,不光写在那些你认识的死者上,因为你认识的基本上都死了

耶鲁公开课 - 1871年后的法国课程节选

I think for the past three months, I've only had five or six hours of sleep at night.

我觉得在过去三个月里，每晚我就睡5到6个小时。

I need 实战 - SpeakingMax英语口语达人

In the past,only healthy people have had their genomes fully sequenced.

VOA: special.2010.03.23

Only one lived past the age of eighteen.

VOA: special.2009.02.09

And we must not be prisoners of the past,". Only eight Republicans in the House voted for the bill.

VOA: standard.2009.06.27

It is not like in the past." Europe may have emerged from recession, but its effects are only now becoming clear.

VOA: standard.2010.06.24

Britain has a long history of deep involvement in not only Iran, but across the Middle East during the past 200 years.

VOA: standard.2009.07.02

They noted that the African Union has in the past approved an important convention, only to see it lie dormant for lack of ratification.

VOA: standard.2009.10.23

For the past decade, the Old North St.Louis neighborhood has had only one grocery store.

VOA: standard.2010.07.28

This anniversary is about remembering the past. And as the dominoes run in a line from Potsdamer Platz, past Brandenburg Gate to the nearby parliament, they once again divide the city, even if only briefly.

VOA: standard.2009.11.09