The first group, the Romans, came in the first century.

第一个群体，罗马人，在一世纪来到。

We often say, When in Rome, do as the Romans do.

我们常说，“入乡随俗”。

The ancient causeway was built by the Romans.

这条古老的堤道是由罗马人建造的。

The romans were known for their advanced road systems.

古罗马人以其先进的道路系统而闻名。

The romans left a lasting legacy in law and governance.

古罗马人在法律和治理方面留下了持久的遗产。

Charlemagne was crowned Emperor of the Romans in 800 AD.

查理曼大帝于公元800年被加冕为罗马人的皇帝。

Hannibal crossed the Alps with his army to surprise the Romans.

汉尼拔带领他的军队翻越阿尔卑斯山，出其不意地袭击了罗马人。

The romans built impressive aqueducts to supply water to their cities.

古罗马人建造了令人印象深刻的渡槽来为他们的城市供水。

When in Rome, do as the Romans do.

入乡随俗。

An old saying goes, When in Rome, do as the Romans do.

古语有云：入乡随俗。