收集旧海报和传单这类印刷品的人通常对短暂性的印刷物特别感兴趣。

People who collect old posters and leaflets are often particularly interested in ___ephemera.

演唱会门票和传单是典型的短期物品，演出结束后往往就被丢弃。

Concert tickets and flyers are typical ___ephemera that are often discarded after the show.