radius of gyration

例句：

1. 1.The ball gyrated around the court.
   球在球场上旋转。
2. 2. The ship gyrated back and forth in the waves.
   船在波浪中来回摇摆。
3. 3. The car gyrated slowly as it approached the intersection.
   汽车缓缓驶向十字路口。