“广告纸板”常见的英文表达是 advertising board 或 ad board(较为口语化、非正式的场合可用)。
“advertising” 意思是“广告的;做广告的” ;“board” 有“板;牌”的意思,二者结合就是用于广告展示的纸板。例如:The advertising board was placed at the entrance of the shopping mall.(那块广告纸板被放置在购物中心的入口处。 )