rotation grazing on an area basis

例句：

1. 1.The machine rotates the parts to ensure they fit together properly.
   这台机器旋转部件以确保它们正确配合。
2. 2. The team rotated their players to give everyone a chance to play.
   球队轮换球员，让每个人都有机会上场。
3. 3. The car is designed for automatic rotation of the gears.
   汽车设计为自动换挡。