rotating talking beacon

例句：

1. 1.The car's engine is rotatingsmoothly.
   汽车发动机平稳旋转。
2. 2. Thewheel of the car isrotating clockwise.
   汽车轮子顺时针旋转。
3. 3. The satelliteis rotating around the earth at ahigh speed.
   卫星以高速围绕地球旋转。