center of rotation

例句：

1. 1.The car's steering wheel is the center of rotation for the driver.
   汽车的方向盘是驾驶员的旋转中心。
2. 2. The balance of power in this region is determined by the center of rotation.
   该地区的权力平衡由旋转轴心决定。
3. 3. The new model car has a more precise center of rotation than its predecessor.
   新款汽车的旋转轴心比前款更精确。