Cognitive decline is the loss of ability to learn new skills, or recall words,names,and faces that is most common as we age.

VOA: standard.2010.06.17

What we think of as the golden age of Greece was virtually at an end during the lifetime of Aristotle.

我们所知的希腊黄金时期,在亚里士多德的生年,其实已走到末端。

耶鲁公开课 - 政治哲学导论课程节选

And what we find, the first example of a Bronze Age-- and I use the word civilization now for the first time, because before the Bronze Age-- there is nothing that we would define as civilization.

我们发现的第一个文明出现在青铜时代,也是我第一次用文明这个词,因为在青铜时代之前,没有任何东西能称之为文明

耶鲁公开课 - 古希腊历史简介课程节选

Global Witness director Simon Taylor says the end of the oil age will change life as we know it.

VOA: standard.2009.10.20