rear rail

例句：

1. 1. The car's rear rail is designed to keep the luggage compartment closed.
   汽车的后部轨道设计用来保持行李舱关闭。
2. 2. The train's rear rail was damaged during the accident.
   火车在事故中后部轨道受损了。
3. 3.The new design of the rear rail makes it easier for passengers to move around.
   新设计的后部轨道使乘客更容易移动。