biennial

biennial
[bʌɪˈɛnɪəl]
adjective
  1. taking place every other year
    两年一次的,每隔一年的。 比较 biannual
    summit meetings are normally biennial.
    首脑会议通常两年举行一次。
  2. (of a plant) taking two years to grow from seed to fruition and die
    (植物) 二年生的。 比较 annual, perennial
noun
  1. a biennial plant
    二年生植物
  2. an event celebrated or taking place every two years
    两年举办一次的(庆祝)活动
派生
biennially
adverb
语源
  1. early 17th cent.: from Latin biennis (from bi- 'twice' + annus 'year') + -al
英语宝典
考试词汇表