city federation

• 城邦

city federation的用法和样例：

例句

1. Rome was the most powerful city in the world.
   罗马曾是世界上最强盛的城邦。
2. The Western city-state society actually is the state based on the city.
   西方古代城邦社会实际上就是以城邦为基础的国家。