记忆方法
将“biennial”拆分为“bi”和“ennial”。记住“bi”代表“每两年”，而“ennial”类似于“annual”，意味着“一年一次”。因此，结合起来，记住“biennial”是指每两年发生一次的事件或周期。
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词族 · biennial
词形变化
中文词源
biennial 两年一次的
前缀bi-, 二。词根enn, 年。
英语词源
- biennial (adj.)
- "lasting for two years" (1620s); "occurring every two years" (1750), from Latin biennium "two-year period," from bi- (see bi-) + annus "year" (see annual). The vowel change is "due to the Latin phonetic law according to which the unaccented and closed radical syllable of the second element of compounds, original -ă- becomes -ĕ-" [Klein]. The noun meaning "a biennial plant" is attested by 1770.
权威例句
- 1. The workers were strongly against the biennial election.
- 工人们强烈反对两年一次的选举.
- 2. It may subsequently become a weak grower and a distinctly biennial cropper.
- 随后会引起树势衰弱,明显两年结一次果.
- 3. If the biennial cycle is broken for one year the trees normally bear annual crops subsequently.
- 如果一年里打破了大小年的循环周期,植株以后就可正常结果.
- 4. His 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.
- 5. European biennial widely cultivated for its blue or violet or white flowers.
- 因其蓝色紫色或白色的花而被广泛种植的欧洲两年生草本植物.