Sandwich board
01
三明治板, 便携式广告牌
a type of advertising sign consisting of two boards, worn one on the front and one on the back of a person, often used to promote a business or event
例子
A sandwich board outside the cafe caught my eye with a special offer for coffee.
咖啡馆外的三明治板以咖啡特价吸引了我的注意。
