The Roman Empire was overrun by Nordic barbarians.

罗马帝国被北欧蛮族推翻了。

《柯林斯英汉双解大词典》

The Roman Empire subjected most of Europe to its rule.

罗马帝国把欧洲多数地区置于自己的统治之下。

《牛津词典》

During the time of the roman Empire (37 BC-476 AD), it was very difficult to make purple dye.

在罗马帝国时期（公元前37年-公元476年），制造紫色染料非常困难。

youdao

It was first developed in the Roman Empire about two thousand years ago.

VOA: special.2009.09.16

When a slave is freed--and in the Ancient World, in the Roman Empire, most slaves were eventually freed, - unless they just died before long-- they became a freed man.

当一名奴隶被释放。。。在古罗马帝国，几乎所有奴隶最终都会被释放，除非他们很早就去世-,成为脱离奴隶身份的人。

耶鲁公开课 - 新约课程节选

There were always battles and wars going on, on the boundaries, the frontiers of the Roman Empire, but within the center of the empire there was an amazing period of peace.

战争永远都在进行，在边界，罗马帝国边境，但在帝国中心却是一派和平盛世。

耶鲁公开课 - 新约课程节选

It also witnessed the most vigorous revival of attention to Africa since the Roman Empire.

WSJ: Less Familiar Faces | Revealing the African Presence in Renaissance Europe | Princeton University Art Museum | By Barrymore Laurence Scherer

It did not end until Julius Caesar restored order and laid the foundation of the Roman empire.

ECONOMIST: Waiting to recover

Bo'ness is at the eastern end of the Antonine Wall, which was the Roman empire's most northerly frontier.

BBC: NEWS | UK | Scotland | Tayside and Central | Roman museum set to be improved