loaded freight car kilometers

例句：

1. 1. Thetruck was loaded with goods for the longjourney ahead.
   这辆卡车装满了货物，准备长途旅行。
2. 2. The driver calculated thedistance to the next town based on theloaded freight car kilometers.
   司机根据装载货物的货车公里数计算到达下一个城镇的距离。
3. 3. The company's efficiency ismeasured by how many loaded freight carkilometers they can cover in a day.
   该公司的效率通过一天能覆盖多少装载货物的货车公里来衡量。