Lucy walks out " the front exit to the bus stop."

露西走出了“前门出口走到公交车站”。

The front exit, " exit, " as a noun, means the door where you leave.

“前门出口（exit）”，出口是名词，是指你离开的那扇门。

Jones, you take the front exit. Go, go!

琼斯 你去守前门 快！

When the train gets to Union Station, I get off the train, go up the stairs, and go out of the front exit to the bus stop.

列车到达联合车站时，我下了车，上楼梯，出了前门出口走到公共汽车站。