五世纪早期的哲学家圣奥古斯丁写过一句名言：只要无人问起，他便知晓时间是什么。

Early fifth-century philosopher St. Augustine famously wrote that he knew what time was unless someone asked him.

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长城最早始建于公元前五世纪。

Construction of the wall began in the fifth century B.C..

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卫城建于西元前五世纪，意指城市的至高点。

The Acropolis was built in the 5th Century BC, and, basically, the word means high point in the city.

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According to this view, man is not merely the measure of all things as the Greek Sophist Protagoras had radically proclaimed in the fifth century.

根据这种观点,人不仅仅是衡量一切事物的标准,这是古希腊诡辩学家普罗塔哥拉,在公元五世纪提出的

耶鲁公开课 - 古希腊历史简介课程节选

The first crowd to do stuff like that, you will find, in the fifth century B.C. In Greece is a movement called the Sophistic Movement.

你们会发现第一批做这种事情的人,是在公元后五世纪的希腊人,当时兴起了一种叫诡辩的运动

耶鲁公开课 - 古希腊历史简介课程节选

There's a Greek in the fifth century who says the same thing.

一个五世纪的古希腊人就表达过同样观点

耶鲁公开课 - 古希腊历史简介课程节选