back haul造句

The back hauls are essential to their bottom line.
He said only a few Mexican trucking companies have been able to put together business relationships that will allow for a back haul-a return shipment from one destination to another.
Wireless technologies are critical elements of the Neighborhood Area Network ( NAN ), aggregating a mesh configuration of up to thousands of meters for back haul to the utility s IT headquarters.
It's difficult to find back haul in a sentence. 用back haul造句挺难的