飞机降落后，乘客们有序地下机。

After the plane landed, the passengers started ___disembarking in an orderly manner.

乘客们正在从渡轮上下船。

The passengers are ___disembarking from the ferry.

乘客们在轮船靠岸后开始下船。

The passengers started ___disembarking after the ship docked.