拍动

qì chē hòu mén pāi dòng zhe dǎ kāi le

汽车后门拍动着打开了。

The rear door of the car flapped open.

nà zhī niǎo pāi dòng zhe chì bǎng

那只鸟拍动着翅膀。

The bird was flapping its wings.