劍橋詞典a large piece of card , paper , etc. with a message written or printed on it, often carried in public places by people who are complaining about something 布告；標語牌 Demonstrators marched past holding /waving placards that said "Send food , not missiles !" 示威者舉著／揮動著標語牌游行，上面寫著“要食物，不要導(dǎo)彈”。 返回 placard