bi.en.ni.al
adj.（形容词）Lasting or living for two years.持续两年的，生活两年的Happening every second year.每两年发生一次的Botany Having a life cycle that normally takes two growing seasons to complete.【植物学】 二年生的：需要两个生长季来完成生命周期的n.（名词）An event that occurs every two years.每两年发生一次的事Botany 【植物学】 A plant that normally requires two seasons to complete its life cycle, growing usually as a rosette in the first season and producing flowers and fruits and then dying in the second season.二年生植物：一般需要两个生长季来完成其生命周期的植物，通常是第一季生长为莲座丛，第二季开花、结果，后死亡A perennial plant, such as the English daisy, cultivated as a biennial.以两年生植物栽种的多年生植物，如英国雏菊
【引伸】
bien.nially
adv.（副词）
