ephemera

不规则复数

A noun referring to items or things that are transitory, short-lived, or intended to last only for a brief period, often used in the context of collectible printed materials or objects of passing interest.

• 🇨🇳名词，指短暂存在、转瞬即逝或仅有短期用途的事物，常用于描述收藏性印刷品或一时兴趣的物品。

1. Transitory things C1 formal

   Items or phenomena that are short-lived or last for a very brief period, often only a day.

   • The beauty of cherry blossoms is a kind of ephemera.
   • Collectors often seek vintage ephemera like old tickets and postcards.
   • The mayfly is a classic example of biological ephemera.

   🇨🇳短暂的事物

   同义词: evanescencefleetingnessimpermanencetemporarinesstransiencetransitoriness

   反义词: durabilityendurancepermanence

• ephemerae plural form
• ephemeras plural form
• ephemerae' possessive plural form
• ephemeras' possessive plural form
• ephemera's possessive singular form

不规则复数

A noun referring to anything that is short-lived or transitory, such as an insect that lives only for a day in its winged form.

• 🇨🇳名词，指短暂存在或转瞬即逝的事物，例如寿命极短、只活一天的昆虫（如蜉蝣）；也泛指一切短暂易逝的现象或事物。

1. Short-lived organism C2 formal

   A living being, especially an insect, that has a very brief lifespan, often only a day in its adult form.

   • The mayfly is a classic example of an ephemeron.
   • Ephemerons live for such a short time that they often don't need to eat.
   • Scientists study ephemerons to understand rapid life cycles.

   🇨🇳短命生物

   同义词: dayflyephemeridmayfly

   反义词: perennial

2. Transient thing C2 formal

   Anything that is fleeting or lasts for a very short period.

   • Fame can be an ephemeron, here today and gone tomorrow.
   • The beauty of a cherry blossom is an ephemeron.
   • He collected ephemerons like old tickets and notes.

   🇨🇳短暂事物

   同义词: ephemeratransient

   反义词: constancydurabilityenduranceeternitypermanenceperpetuitystability

• ephemera plural form
• ephemerons plural form
• ephemera's possessive plural form
• ephemerons' possessive plural form
• ephemeron's possessive singular form