拍动

例句：

1. 1. The bird is flapping its wings in the wind.
   这只鸟在风中拍打着翅膀。
2. 2. The car engine rattled as it started.
   汽车引擎启动时发出了响声。
3. 3. The baby was bouncing on the bed, making the furniture shake.
   婴儿在床上跳来跳去，使得家具都摇晃起来。