Word · Frequency #22327
biennial
两年一次的
Happening once every two years.
- 1.
Happening every two years.
每两年发生一次的。
- 2.
Lasting for two years.
持续两年的。
两年生的；每两年发生一次的。；持续两年的。
In use
Carrots and parsley are biennials that flower in their second year.
The garden's biennial plants were sown last year and will flower this spring.
The city hosts a biennial music festival that draws international artists.
be biennial
biennial 作形容词表示生长周期为两年时，常作表语，放在 be 动词之后。
These plants are biennial, so they bloom in their second year.
这些植物是两年生的，所以它们第二年开花。
biennial + noun
biennial 作形容词表示“每两年一次的”时，放在名词前作定语。
The biennial festival is held in June.
这个两年一度的节日在六月举行。
a biennial
biennial 作名词指两年生植物，也可指两年举办一次的活动；复数形式为 biennials。
A biennial takes two years to complete its life cycle.
两年生植物需要两年时间完成生命周期。
Common mistakes
We have a biennial meeting in January and another in July.We have a biannual meeting in January and another in July.
biennial 意为“两年一次的”，而 biannual 意为“一年两次的”。句中 January 和 July 指同一年内的两次会议，应使用 biannual。这两个词容易混淆。
The exhibition takes place biennial.The exhibition takes place biennially.
biennial 是形容词/名词，不是副词。修饰动词短语 takes place 需用副词形式 biennially（每两年一次地）。英语中形容词不能直接作状语，这与汉语不同。
Connections
Collocations
- biennial plant
- 两年生植物
- The foxglove is a biennial plant that blooms in its second year.毛地黄是两年生植物，在第二年开花。
- biennial event
- 两年一届的活动
- The art exhibition is a biennial event that attracts visitors from around the world.这个艺术展是两年一届的活动，吸引着来自世界各地的游客。
- biennial election
- 两年一次的选举
- The club holds biennial elections for its officers.该俱乐部每两年举行一次官员选举。
- biennial conference
- 两年一次的会议
- She presented her research at the biennial conference.她在两年一次的会议上展示了她的研究。
- biennial report
- 两年一次的报告
- The committee publishes a biennial report on its activities.委员会每两年发布一份关于其活动的报告。
Learner notes
Memory Tip
联想记忆：bi（二）+ annual（年）→ biennial（两年一次）。
Context & Register
语域：formal 常见场景：botany、official documents、event scheduling biennial 多用于正式或专业语境，如植物学、官方文书和定期活动安排；日常口语中更常说 every two years。
Grammar Note
biennials
Pronunciation & Spelling
与 perennial、centennial、millennial、triennial 押韵，它们都以 -ennial /ˈɛniəl/ 结尾，重音在第二音节 /ɛ/ 上。注意 annual /ˈænjuəl/ 和 biannual /baɪˈænjuəl/ 拼写相近，但读音完全不同：annual 重音在首音节，元音为 /æ/，不是 /ɛ/；biannual 意为“一年两次”，与 biennial（每两年一次）含义也不同。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.