rotating main movement

例句：

1. 1. The car is rotatingslowly on the track.
   汽车在跑道上缓慢旋转。
2. 2. The machine is rotating partsto make them fit together.
   机器正在旋转部件，使它们能够配合在一起。
3. 3. Thesatellite is rotating around the earth ata high speed.
   卫星以高速围绕地球旋转。