查理曼大帝常被铭记为一位伟大的皇帝。

Charlemagne is often remembered as a great ___emperor.

第一位罗马皇帝奥古斯都建立了一个持久的帝国。

The first Roman ___emperor, Augustus, established a long-lasting empire.

在古代中国，皇帝被认为是天子。

In ancient China, the ___emperor was considered the Son of Heaven.