centric relation arc

例句：

1. 1. The city islocated at the centric point of thecountry.
   这个城市位于国家的中心。
2. 2. Thecentric structure of the planet revolves aroundthe sun.
   行星的核心结构围绕太阳旋转。
3. 3.The centric focus of the meeting wason improving communication between departments.
   会议的核心焦点是改善各部门之间的沟通。