东罗马帝国的

例句：

1. 1. The ancient city of Constantinople is now known as Istanbul.
   现在的伊斯坦布尔是古都君士坦丁堡。
2. 2. The Roman Empire was founded by Augustus Caesar in the 1st century AD.
   罗马共和国由奥古斯都·凯撒于公元1世纪创立。
3. 3. The Byzantine Empire, once the most powerful empire in the Mediterranean, declined after the fall ofConstantinople.
   拜占庭帝国，曾经地中海最强大的帝国，在君士坦丁堡陷落后衰落。