ephemera
noun [ plural ] uk/ɪˈfem.ər.ə/ us/ɪˈfem.ɚ.ə/
只在短期内有用的事物;短暂存在的事物;一次性的事物
objects that, when they were produced, were not intended to last a long time or were specially produced for one occasion
Amongst other pop ephemera, the auction will be selling off rock stars' stage clothes. 拍卖会拍卖的流行乐坛的短时效物品中将包括摇滚歌星们的演出服装。