The Romans began a campaign to expand the Roman Empire, and in 300 years they had conquered most of the Mediterraneanarea and parts of Europe.
罗马人开始了一场扩张罗马帝国的运动,在300年的时间里征服了地中海的大部分地区和欧洲的部分地区。
2
The arch was used by the early cultures of the Mediterraneanarea chiefly for underground drains, but it was the Romans who first developed and used the arch extensively in aboveground structures.