As an important part of the ship,canopy plays the role of hermetization and protection of cargo,which influences the safeness of cargo directly in transportation.
Focusing on overspeeding and overloading from the driver's viewpoint,the essay reflets the tough problem of a cargo cab's driver under the hard living situation.
It also allows for the inspection of suspected suspect cargo on ships and airplans airplanes, and the confiscation and disposure disposal of any banned items that are found.