柯林斯词典sandwich board 1. N one of two connected boards, usually bearing advertisements, that are hung over the shoulders in front of and behind a person 夹层板 返回 sandwich board剑桥词典a pair of connected boards that a person hangs over their shoulders and walks around with in public places to advertise something 三明治式广告牌，夹板广告牌（分别挂在胸前和背后的相连的广告牌） 返回 sandwich board