前后颠簸

例句：

1. 1. The car was bouncing along the road.
   汽车在道路上颠簸。
2. 2. The boat was rocking back and forth in the waves.
   船在波浪中颠簸。
3. 3. His mood was unstable, making him bounce around in his chair.
   他的心情不稳定，使他来回晃动在他的椅子上。