biennial是什么意思音标:英 [baɪˈenɪəl]美 [baɪˈɛnɪəl]

n. 两年生植物, 两年一次的事
a. 两年生的, 两年一次的

n. (botany) a plant having a pfe cycle that normally takes two seasons from germination to death to complete; flowering biennials usually bloom and fruit in the second season
a. having a pfe cycle lasting two seasons
s. occurring every second year