(botany) a plant having a life cycle that normally takes two seasons from germination to death to complete; flowering biennials usually bloom and fruit in the second season
Adjective:
having a life cycle lasting two seasons;
"a biennial life cycle"
"parsnips and carrots are biennial plants often grown as annuals"
occurring every second year;
"they met at biennial conventions"
例句
用作形容词 (adj.)
Every union has its own annual or biennial meeting. 每个工会都有自己的年会或每二年一次的大会。
The workers were strongly against the biennial election. 工人们强烈反对两年一次的选举。
They met at biennial conventions. 他们是在两年举行一次的大会上遇见的。
All annual and biennial plants are monocarpic. 所有一年生及二年生植物都是结果一次后死去。
用作名词 (n.)
This is a biennial, and one of the most useful pasture plants we have. 这是两年生植物,也是我们最有用的牧草之一。