rotating circular disk

例句：

1. 1.The car is rotating slowly on thetrack.
   汽车在跑道上缓慢旋转。
2. 2. Themachine is rotating parts to make themfit together.
   这台机器正在旋转部件，使它们能够配合在一起。
3. 3. The satelliteis rotating around the earth at ahigh speed.
   卫星以高速绕地球旋转。