传送带把纸箱送到对应的分拣口，扫描仪记下纸箱上的编码，再把它们装进开往不同城市的大货车。
Conveyor belts carried the boxes to the right sorting chutes, scanners recorded the codes on the boxes, and the boxes were loaded onto big trucks heading to different cities.
Conveyor belts carried the boxes to the right sorting chutes, scanners recorded the codes on the boxes, and the boxes were loaded onto big trucks heading to different cities.