| 单词 | biennial |
| 释义 | biennial adj. & n. --adj 1. lasting two years. 2. recurring every two years (cf. BIANNUAL). --n 1. Bot. a plant that takes two years to grow from seed to fruition and die (cf. ANNUAL, PERENNIAL). 2. an event celebrated or taking place every two years. Derivatives biennially adv. Etymology: L biennis (as BI-, annus year) |
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