| 释义 |
biennial
[baɪ'en.i.əl] adjective
■happening once every two years 两年一次的 Compare annual ; biannual
[baɪ'en.i.əl] noun countable
■a plant that lives for two years, producing seeds and flowers in its second year 两年生植物（第二年开花） Compare annual ; biannual ; perennial |