剑桥词典informal a short film made to advertise a product , especially a pop song （尤指现代流行音乐唱片的）广告片 US an advertisement , broadcast announcement , or discussion with a writer , film producer , actor , etc., designed to give attention to a book or film in order to increase sales （为增加书或电影的销量而设计的）广告宣传 返回 promo