Two persons take their things are standing at the bus station waiting for the bus.just then,the bus they are wait is coming.
Two people are carrying the stuff at the bus stop who are waiting for the bus when the bus is coming.
There comes the bus. Two people waiting for the bus are chating with some things in their hands.
There comes the bus, and there are two people waiting at the bus station with things in their hands.
三局对话 是说那两个人之间对话么?