Back haul is the distance traveled from the delivery destination point back to the departure point.

回程是从交货目的地回到出发点的距离。

youdao

He has to select a departure from the resident, through every city once again, and finally returned to the residents line, bringing the total distance (or travel) the smallest. (2).

他要选定一条从驻地出发，经过每个城市一遍，最后回到驻地的路线，使总的路程(或旅费)最小。

youdao

The taxi time was extraordinarily long due to the distance to the departure runway.

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