n.只在短期内有用的事物

原形：ephemeron复数：ephemeras

The memories of our childhood can often feel like ephemera, fleeting moments that are gone in the blink of an eye.
我们童年的记忆往往如同过眼云烟，转瞬即逝。
Butterflies are beautiful ephemera of nature; their lives are short but impactful.
蝴蝶是大自然中的美丽过客，它们的生命短暂但影响深远。
Old concert tickets and love letters are examples of ephemera that hold significant sentimental value.
旧的演唱会门票和情书就是具有重要情感价值的暂时性物品例子。
In the digital age, many forms of ephemera have become even more transient due to the ease of deletion and updating.
在数字时代，由于易于删除和更新，许多类型的暂时性物品变得更为瞬息万变。
The artist collected various ephemera from the city's streets to incorporate into her collage project.
这位艺术家收集了城市街头的各种暂时性物品，用于融入她的拼贴艺术项目中。
Ephemera such as menus, flyers, and posters provide valuable insights into the social history of a place.
菜单、传单和海报等暂时性物品为了解一个地方的社会历史提供了宝贵线索。
The exhibition showcases vintage ephemera documenting the evolution of advertising over the last century.
该展览展示了记录过去一个世纪广告演变历程的老式临时性宣传品。
His interest lies in collecting ephemera related to old movies, including film posters and lobby cards.
他的兴趣在于收藏与老电影相关的临时性物品，包括电影海报和影院展示卡。
Environmentalists argue that single-use plastics are among the most destructive forms of ephemera in modern society.
环保主义者认为一次性塑料制品是现代社会最具破坏性的临时性物品之一。
Archivists meticulously preserve ephemera to ensure that future generations understand the nuances of past cultures and societies.
档案工作者精心保存各种暂时性物品，以确保后代能理解过去文化和社会的细微之处。