The researchers note that swear words have existed for hundreds of years.

VOA: special.2009.08.18

Agricultural villages will have existed all over the place in the late Stone Age, in the Neolithic Period, as it is known. But there is a difference and the critical difference is that a city contains a number of people who do not provide for their own support.

农业村庄在石器时代后期,以及新石器时代随处可见,但二者是有区别的,最重要的区别在于,城市能容纳,相当数量,无需自给自足的人口

耶鲁公开课 - 古希腊历史简介课程节选

Because they would have started with the hypothesis, not that there existed a month, but that June was particularly likely.

因为他们是有了假设然后再开始做实验的，而不是说有一个这样特殊的月份，而是六月是一个特殊的月份。

麻省理工公开课 - 计算机科学及编程导论课程节选

Sharks have existed for hundreds of millions of years.

VOA: special.2009.04.03

None of us have seen a case of smallpox, it hasn't existed in the world for many decades now.

我们没人见过天花,在这个世界上它已经被消灭几十年了

耶鲁公开课 - 生物医学工程探索课程节选

"You have traditional knowledge which has existed for hundreds of years, which is absolutely being starved of any kind of policy support or funding because governments seem so obsessed with genetic modification,"

VOA: standard.2009.10.21

We don't have adequate reason to conclude that it's something that existed before I was put together, it's something that will be recycled and continue to exist after I fall apart, after my body decomposes, after I'm separated from my body, or what have you.

我们并没有充分的理由来断定,灵魂是在我被组装起来之前就存在了,它会被循环利用,并且在我解体后依然存在,我的身体分解了之后,在灵魂与肉体分离之后,或者其他说法

耶鲁公开课 - 死亡课程节选

"We have a moral imperative to do this. We are the greatest country that ever existed in the history of the world, the great economic leader of the developed world, but the only one that does have access to quality, affordable health care for our people, and we intend to do so,".

VOA: standard.2009.09.04