罗马社会先后经历了王政时代、共和时代和帝国时代三个时代阶段。

Roman society has gone through the Wang era, the Republican era and the Age of Empires.

youdao

认为无名氏的创作可以分为三个时代，并指出每个时代的不同特征。

His creation can be divided into 3 stages each one has different features.

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亚洲的战略转型差不多肯定是我们这个时代最重要的历史性趋势，但因为三个原因，这个问题至今很少受到应有的关注。

The strategic transformation of Asia is almost certainly the most important historic trend of our time, but it has received less attention than it should, for three reasons.

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But whenever we've had a reform era there's been a big issue, or two or three or four.

但每当我们有一个改革的时代,都会存在一个,两个,三个或者四个大问题

耶鲁公开课 - 美国内战与重建课程节选

I've given you the periods at the top of the chart: early Bronze Age; middle Bronze Age from about 2100 to 1550; we date the late Bronze age from about 1550 until 1200--the introduction of iron and the beginning of the Iron Age in 1200. Prior to that, the Bronze Age, which is divided into these three periods.

我在这个表格的顶端给你们列了一些时期：,早期青铜时代；中期青铜时代，从约公元前2100年到前1550年；,晚期青铜时代，从公元前1550年到前1200年，即铁器时代前页；,然后公元前1200年开始了铁器时代，在那以前，青铜时代分为那样三个时期。

耶鲁公开课 - 旧约导论课程节选