Four years ago, the labor agency estimated that more than twelve million people were in some form of forced labor.

VOA: special.2009.06.08

And so it really, not the course but the idea for the course, was an evolution three years four years ago, really, when I was involved in something called the Civic Values Task Force, which was started by Princeton Project 55.

所以说，不是这个课程,而是这个课程的设想，是在三四年前形成的，当时我参加了,公民价值专责小组，由普林斯顿大学55工程发起。

普林斯顿公开课 - 人性课程节选

And I was there. I've been there twice, most recently about four years ago.

我去过法国，去过两次，最近的一次是四年前。

想学会4种语言 - SpeakingMax英语口语达人

The ILO notes that child labor is decreasing worldwide, but at a much slower rate than four years ago.

VOA: special.2010.05.17

After decades of relatively unspectacular growth, compared to the east Asian economies, India's economy suddenly took off three or four years ago, growing at 8% or more a year.

经历了几十年的相对高速发展后，与其他东亚经济体相比，印度经济三或四年前突然开始腾飞,以每年8%甚至超过%,8%的速度增长。

普林斯顿公开课 - 国际座谈会课程节选

For example, the popular bobsleigh team from the island of Jamaica did not qualify for the Olympics four years ago.

VOA: special.2010.02.10

And one of the reasons that's most responsible for that is that humans aren't dying at as young an age from infectious diseases as they did three or four hundred years ago.

最重要的一个原因就是,人们不会在年轻的时候死于传染性疾病,而这在三四百年前确实会发生

耶鲁公开课 - 生物医学工程探索课程节选

Walking through these historic areas, visitors today might find it hard to believe that a deadly storm swept through the city over four years ago.

VOA: special.2010.01.22

But what she will be remembered for most is her activism that grew out of the struggles of her mentally retarded sister,Rosemary, who died four years ago.

VOA: special.2009.08.15

But four years ago this month a jury cleared him of all charges.

VOA: special.2009.06.27

It will include ninety-one athletes, compared to seventy-six athletes four years ago.

VOA: special.2010.02.10

Four years ago, Ms.Pelosi became the first woman ever elected speaker.

VOA: special.2011.01.10

Google.cn launched four years ago this month.

VOA: special.2010.01.15

That was about four years ago.

VOA: special.2009.05.18

He got the idea for Khan Academy four years ago, when he taught a young cousin how to convert kilograms to grams.

VOA: standard.2010.03.26

A big change came four years ago, when Russia's new forestry law essentially privatized management of state forests.

VOA: standard.2010.08.10

Four years ago on International Women's Day, the Afghan government unveiled a plan for accelerating the improvement of women's status in the country.

VOA: standard.2010.03.07

"We qualified for the 1/16th, that was four years ago in Germany. And this time, we were able to qualify to the quarterfinals.

VOA: standard.2010.07.01

Also a nearby volcano erupted four years ago,ripping open a crack in the Great Rift Valley.

VOA: standard.2009.12.14

It was the most serious clash on the border since the Lebanon War four years ago, when Israel battled the Islamic guerrilla group Hezbollah.

VOA: standard.2010.08.03

That's exactly why the Centers for Disease Control began recommending rapid HIV screening in emergency departments and other health care settings four years ago.

VOA: standard.2010.07.23

There are 20 sports this year, three more than were played four years ago.

VOA: standard.2009.09.10

It was the most serious border clash since the Lebanon War four years ago.

VOA: standard.2010.08.05

That exceeded the Canadians 16-0 win over host Italy four years ago in Turin.

VOA: standard.2010.02.15

(Speaking in Russian) Arutyunov says nationalism receded somewhat about three or four years ago.

VOA: standard.2010.04.01

It all began three or four years ago when there was construction boom.

VOA: standard.2010.06.24

Brees,who completed 32 of 39 passes for 288 yards,two touchdowns and no interceptions,said, "It's an amazing story" "You know,four years ago who ever thought this was going to happen.

VOA: standard.2010.02.08

The lanky teenager began playing Australian Rules Football just four years ago but has made history by becoming the first player from Africa to join the professional league,the AFL.

VOA: standard.2009.12.17

Gibbs said that Hugo Chavez has used his rhetoric in the past to incite anti-American sentiment - most notably four years ago at the last Summit of the Americas in Argentina.

VOA: standard.2009.04.20

As the conference opened Sunday with a session on gender issues, Namibian lawmaker Nora Schimming-Chase said the number of women delegates has steadily declined since hitting a peak four years ago.

VOA: standard.2009.04.05