It has been about forty years since the United States Food and Drug Administration approved a drug especially for treating lupus.

VOA: special.2010.06.15

And it may well be that no poem has ever been since Paradise Lost published with line numbers in its very first edition.

只有《失乐园》首次印刷的时候把行数印上,之后的诗歌都没被这么出版过。

耶鲁公开课 - 弥尔顿课程节选

Who here has been making it since the beginning of the semester on under six hours a night?

谁从本学期开学到现在,每晚睡不到六小时的？

耶鲁公开课 - 心理学导论课程节选

It has been more than two years since he has been to a hospital emergency room because of asthma.

VOA: special.2009.07.28

So, it seems to me,that Western civilization,ever since, has been a composite of these two traditions.

因此,在我看来,西方文化从那时至今,都是两种传统的复合物

耶鲁公开课 - 古希腊历史简介课程节选

Everything is gone." It has been more than a century since a German doctor, Alois Alzheimer,told about a dementia patient whose brain was studied after death.

VOA: special.2009.09.15

But first of all I wanna welcome you to the Inner Core and I want to say just by introduction how inspiring it has been to work with you over these last years since I've been here. You were part of the group that hired me and I thank you so much for that.

首先，我想欢迎您来到人性讲堂,我想说,仅仅为介绍之便,自从我来到普林斯顿大学以来,近年来跟您的合作是多么的激励人心,当初雇用我的小组里，您正是其中一员，非常感谢您。

普林斯顿公开课 - 人性课程节选

He said,"It has been my decision since becoming a candidate to make no speeches.

VOA: special.2009.07.09

He has been doing it since the 1970s.

他自70年代开始研究。

哈佛公开课 - 幸福课课程节选

It has been a popular entertainment place since the nineteen fifties.

VOA: special.2009.02.16

You can see that residential investment, as a fraction of GDP, has been very variable through history of the United States since World War II and that it's had a strong relationship with recessions.

住宅投资要计入,国内生产总值,纵观美国自二战以来,这部分投资,变动很大,而且与衰退存在着密切关联

耶鲁公开课 - 金融市场课程节选

Since then, it has been built and used in many countries.

VOA: special.2009.04.20

Dr. William Abraham of Ohio State University "It has been a decade since we have seen a trial this positive."

VOA: standard.2010.06.04

It has been 3.5 years since the bombing of the mosque triggered one of the worst displacement crises in recent times.

VOA: standard.2009.09.20

She says it's especially disappointing since the UK has been such a strong supporter of Rwanda.

VOA: standard.2009.04.10

The country has been plagued by unrest since 1992, when parliamentary elections were canceled as it appeared a coalition of Islamist groups might take power.

VOA: standard.2009.04.10

"Already it (world output) has been contracting at the fastest rate since World War II.

VOA: standard.2009.04.24

Fostering financial literacy among young people and preparing them for the workplace has been the mission of Junior Achievement since it was founded in 1919.

VOA: standard.2009.12.04

The right-wing government of Israeli Prime Minister Benjamin Netanyahu says it has been ready to return to the negotiating table since it took power five months ago.

VOA: standard.2009.08.21

"I think it's only been since the Iranian Revolution that the United States has been the 'Great Satan.' And there was always a suspicion that the British were behind the scenes, even if the United States was more upfront involved in some kind of activity that was seen to counter Iranian national interests,".

VOA: standard.2009.07.02