"If you go back to 2001, there were huge numbers of terrorists, under Taliban control, being trained in terrorist training camps to target this country and others,".

VOA: standard.2009.08.02

Now, let's go back to a theory which has at least got the virtue of being very old, although hardly anybody believes it anymore.

现在,让我们再回去看一个理论,它的优势在于非常古老,虽然已经没人再相信它

耶鲁公开课 - 古希腊历史简介课程节选

So I want to go back again, now we're considering the line on the board as being flavor in beer, or location in a town, and I want to go back to politics now and go back to the interpretation we started with, so that left and right will end up being left-wing politics versus right-wing politics.

所以我想返回去,现在我们将黑板上的线看成,啤酒的口味或城市的位置,我现在再回去讨论政治,回去解释我们最初,把线的左边和右边,看成左派和右派的原因

耶鲁公开课 - 博弈论课程节选