central isomorphism

例句：

1. 1. The city is located at the heart of the country.
   这个城市位于国家的中心。
2. 2.The center of the room is where the meeting will take place.
   房间的中心是会议将要举行的地方。
3. 3. The central government has been criticized for its handling of the crisis.
   中央政府因其处理危机的方式而受到批评。