Camels have served as an important form of transportation since ancient times.

VOA: special.2009.01.13

I think most people who have served in the White House would agree with that characterization and try to run their lives that way.

我想很多在白宫,工作过的人都会同意这种描述,而且会尽力,以这样的方式经营自己的生活。

普林斯顿公开课 - 国际座谈会课程节选

Now, you may know that New York City and other places around the country have enacted regulations to stop Trans fats being served in restaurants.

你们可能知道,纽约市和国内某些地方,颁布了卫生条例,禁止餐馆使用反式脂肪

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The tribal areas he controls have served as a major safe haven for al-Qaida and other terrorist groups.

VOA: standard.2009.06.18

"When there are people that we know who have been involved with Noordin (Top), or have been involved in violence, who have served their sentences and who are about to get released, and who have been visited regularly by fellow prisoners who have been released, you would think it would trigger something that these people are high risks, so there should be a way of designating some kind of special category for more intensive monitoring."

VOA: standard.2010.03.24

She says these groups have been operating since 2008 and many of the militants had served prison sentences for past terrorist activities.

VOA: standard.2010.03.24

Dr.Chris Brasher served in the Democratic Republic of Congo, where according to MSF, more than four million people have lost their lives since 1997.

VOA: standard.2010.06.29

From the beginning, food and drink have been served during Boston Pops performances.

VOA: standard.2010.07.28

He wants his right to vote back. "Whatever rights that a normal citizen should have, I believe I should have it as well, since I've served my time and I'm back in society as a paying taxpayer, a community activist,or a person."

VOA: standard.2010.03.25