sand·wich board
noun/ˈsænwɪtʃ bɔːd/, /ˈsænwɪdʒ bɔːd/
/ˈsænwɪtʃ bɔːrd/, /ˈsænwɪdʒ bɔːrd/
- a pair of boards with advertisements on them that somebody wears at the front and back of their body as they walk around in public
夹板广告牌，三明治式广告牌（挂在胸前和后背的一副广告牌）