短语词组短语Pickup truck production line 皮卡生产线Forklift truck production line 叉车生产线truck -line traffic 汽车货运线交通Cement truck line 水泥车管线crude truck line 原油干线decker truck line inc 收获truck hitch cylinder hydraulic line 载重车挂接油缸液压管路 返回 truck line