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 夾層板 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 三明治式廣告牌，夾板廣告牌（分別掛在胸前和背後的相連的廣告牌） 返回 sandwich board