帝国

例句：

1. 1.The ancient empire of Rome was a powerful force in Europe for centuries.
   古罗马帝国在几个世纪里在欧洲是一个强大的力量。
2. 2.The empire's decline is a fascinating topic in history.
   帝国的衰落是历史中一个引人入胜的主题。
3. 3. The empire's legacy lives on through its cultural contributions to the world.
   帝国的遗产通过其对世界文化的贡献得以传承。