Last week,government scientists in the United States announced the discovery of two antibodies that raise hopes for an AIDS vaccine.

VOA: special.2010.07.14

Boy, there's a dumb question, because I've been telling you n log n for the last two lectures the complexity is n log n, but let's see if it really is.

孩子们，这是一个愚蠢的问题，因为前两节课的时候我就已经告诉你们了,复杂度是,但是让我们来看一下是不是真的是这样。

麻省理工公开课 - 计算机科学及编程导论课程节选

And when I go to the A-1 Toyota for my service or to buy my new Camry, which I've done every four years for the last two decades, I don't always think of a slave market but it does occur to me that--.

当我去丰田A1店,接受服务或购买我的新佳美的时候,过去二十年中我每四年都会去一次,我不是总会联想到奴隶市场,但我确实曾经那么想过

耶鲁公开课 - 美国内战与重建课程节选

The last day for nominations was February first, less than two weeks after the president took office.

VOA: special.2009.10.10

Last week,the United States Department of Agriculture released its "household food security" report for two thousand eight.

VOA: special.2009.11.23

Two thousand seven was the last year that the Ms.Foundation for Women headed the program.

VOA: special.2010.04.30

"Historically, during our last two recessions in ninety-one and two thousand one it's taken twenty-three months in ninety-one and about thirty-six months, three years,in our last recession in two thousand one for the United States to regain the jobs lost in the recession."

VOA: special.2009.11.06

Last month,the European Union lifted a two-year ban on travel in its airspace for the national carrier Garuda and three other commercial airlines.

VOA: standard.2009.08.02

"If you haven't looked for a job in the last two or three years, it is radically different than anything you could imagine."

VOA: standard.2010.07.28

The Chancellor is also calling for a quick and thorough investigation of last week's NATO air strike on two fuel tankers, which had been hijacked by insurgents in Afghanistan's Kunduz province.

VOA: standard.2009.09.07

Yettaw was facing seven years of hard labor for an uninvited visit to Aung San Suu Kyi's house where she has been detained for most of the last two decades despite international pressure for her release.

VOA: standard.2009.11.02