A-board
01
A型板, 折叠广告牌
a type of portable advertising sign, typically made of wood or metal, that is hinged at the top and can be folded to resemble the letter "A," and often used to promote a business or event
例子
The event organizers set up an A-board to direct people to the registration desk.
活动组织者设置了一个 A型板 来引导人们到注册台。
