biennial

n. 两年生植物, 两年一次的事 a. 两年生的, 两年一次的

发音

US /baɪˈɛn.i.əl/

词形变化

biennials 复数 biennials

释义与例句

n.
  1. 1.

    A plant that requires two years to complete its life-cycle, germinating and growing in its first year, then producing its flowers and fruit in its second year, after which it usually dies.

    二年生植物

  2. 2.

    An event that happens every two years.

adj.
  1. 1.

    Happening every two years.

  2. 2.

    Lasting for two years.

词汇关系

名词

上位词 3

plant flora plantlife
形容词

同义词 1

biyearly

反义词 2

annual perennial

近义相关 2

periodic periodical

词源

Borrowed from Latin bienni(um) (“two-year period”) [from bis, bi- (“twice”) + annus (“year”)] + -al (suffix forming adjectives). By surface analysis, bi- + -ennial.

来源：wiktionary