(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\\\"
造句
用作形容詞(adj.)
Every union has its own annual or biennial meeting. 每個工會都有自己的年會或每二年一次的大會。
The workers were strongly against the biennial election. 工人們強烈反對兩年一次的選舉。
They met at biennial conventions. 他們是在兩年舉行一次的大會上遇見的。
All annual and biennial plants are monocarpic. 所有一年生及二年生植物都是結果一次后死去。
用作名詞(n.)
This is a biennial, and one of the most useful pasture plants we have. 這是兩年生植物,也是我們最有用的牧草之一。