a freight car with roof and sliding doors in the sides
boxcar详细解释
box.car n.（名词）A fully enclosed railroad car, typically having sliding side doors, used to transport freight.棚车：一种完全封闭的铁路用车，通常具有滑动侧门，用于运货boxcars Games A pair of sixes on the first throw in craps. boxcars 【游戏】 在掷骰子赌中头掷双六
