rotating nozzles

例句：

1. 1.The car is rotating on its axis.
   汽车正在轴上旋转。
2. 2. The machine rotates the parts to make them fit together.
   机器使部件旋转以使其相互配合。
3. 3.The satellite rotates around the earth at a constant speed.
   卫星以恒定的速度围绕地球旋转。