dithering

例句：

1. 1.The camera was dithering in the wind.
   相机在风中抖动。
2. 2.She dithered over what to say next.
   她犹豫不决，不知道该说什么。
3. 3. The car's engine was dithering as it started up.
   汽车启动时发动机抖动。