ecumenopolis

例句：

1. 1. The ecumenopolis of the ancient Greeks was Athens, the capital of their empire.
   古希腊的圣城是雅典，他们的帝国首都。
2. 2. Many pilgrims visit the ecumenopolis of Mecca to pray for forgiveness.
   许多朝圣者前往麦加的圣城祈祷宽恕。
3. 3. The ecumenopolis of the Catholic Church is Rome, the seat of its authority.
   天主教会的圣城是罗马，它的权威所在地。