1. happening twice a year
一年發生兩次的
The company holds biannual meetings in June and December.
這家公司每年六月和十二月舉行兩次會議。
We receive a biannual newsletter from the alumni association.
我們會收到校友會發送的半年刊通訊。
Biannual Meaning（定義、用法、例句與發音）
biannual
adjective
快速理解
What does "Biannual" mean?What are 2-3 core uses of "Biannual"?
「biannual」描述一年發生兩次的事件或活動。
- 1
一年兩次
EN: Happening twice a year.
翻譯: 一年發生兩次的。
- 2
半年一次
EN: Occurring every six months.
翻譯: 每六個月發生一次的。
- 3
年度雙次
EN: Relating to a twice-yearly schedule.
翻譯: 與一年兩次的時間表相關的。
小提醒：注意與「biennial」（兩年一次）的拼寫和意義區別，兩者常被混淆。
發音（How to Pronounce "Biannual" in English）
How to pronounce "Biannual" in English?"Biannual" US vs UK pronunciation
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Biannual" from YouTube Videos
暫無 YouTube 示例，重新生成該詞頁可自動補上 1 條。
Definitions（定義）
What are the definitions of "Biannual"?How does "Biannual" change by context?
2. occurring every two years
每兩年發生一次的
There is some confusion because 'biannual' can also mean occurring every two years.
有些混淆是因為「biannual」也可以指每兩年發生一次。
The biennial art exhibition is sometimes mistakenly called a biannual event.
那個兩年一度的藝術展有時會被誤稱為一年兩次的活動。
3. relating to or lasting for a period of two years
與兩年期間有關的；持續兩年的
The institute published a biannual report summarizing its two-year research project.
該研究所發布了一份總結其兩年研究項目的雙年度報告。
She is on a biannual review cycle for her long-term project.
她的長期專案採用兩年一次的審查週期。
Grammar & Patterns（句型）
What are common sentence patterns for "Biannual"?How to make natural sentences with "Biannual"?
| Pattern | Meaning | Example |
|---|---|---|
| biannual + noun | 一年兩次的 | The company holds biannual meetings in spring and autumn. (該公司在春季和秋季舉行一年兩次的會議。) |
| biannual + event/meeting/report | 一年兩次的活動/會議/報告 | The biannual report is due next week. (那份一年兩次的報告下週到期。) |
| be + biannual | 是一年兩次的 | The festival is biannual, occurring every two years. (這個節慶是兩年一次的，每兩年舉辦一次。) |
| on a biannual basis | 以一年兩次的頻率 | The equipment is inspected on a biannual basis. (設備以一年兩次的頻率進行檢查。) |
用法說明
How is "Biannual" different from similar structures?What usage mistakes are common with "Biannual"?
biannual vs. semiannual
- biannual 最常見的用法是指「一年兩次」，與 semiannual 同義。
- 然而，biannual 有時也會被用來表示「兩年一次」，這與 biennial 同義，容易造成混淆。
- 在正式或技術性文件中，為求清晰，建議使用 semiannual 表示「一年兩次」，使用 biennial 表示「兩年一次」。
- 在口語或非正式場合，使用 biannual 時，最好加上上下文說明以避免誤解。 EN: The company holds biannual meetings in April and October. 翻譯: 公司在四月和十月舉行一年兩次的會議。
EN:The magazine is published on a biannual schedule, meaning every two years.
翻譯:這本雜誌是兩年出版一次。
總結建議
在關鍵溝通中，為避免歧義，建議用「semiannual」明確指「一年兩次」，用「biennial」明確指「兩年一次」。
易混淆對比
What is the difference between "Biannual" and similar words?How to choose "Biannual" vs alternatives?
biannual vs biennial
biannual 指「一年兩次」，biennial 指「兩年一次」，兩者極易混淆。
biannual vs semiannual
biannual 與 semiannual 皆可表示「一年兩次」，但 semiannual 更常用於正式或技術性場合。
biannual vs annual
biannual 是「一年兩次」，annual 是「一年一次」，頻率不同。
口語用法
How is "Biannual" used in spoken English?What is the spoken vs formal difference for "Biannual"?
引述
在口語中，當引述或轉述他人對頻率的說法時，常用「biannual」來保持原話的準確性。 EN: She said the review is biannual, so we have one in June and another in December. 翻譯: 她說審查是半年一次的，所以我們六月有一次，十二月還有一次。
EN:According to the memo, the team meetings are biannual events.
翻譯:根據備忘錄，團隊會議是每年兩次的活動。
語氣強調
在對話中，為了強調事件發生的規律性或官方安排的固定性，會特別重讀「biannual」。 EN: We have a biannual audit – it's not something we can reschedule easily. 翻譯: 我們有一個一年兩次的審計——這不是我們可以輕易改期的。
EN:It's a biannual tradition in our family to go camping in spring and autumn.
翻譯:這是我們家每半年一次的傳統，春天和秋天都會去露營。
停頓填充
在即時對話中思考接下來的內容時，有時會用「biannual…」作為短暫的停頓填充詞，引出更具體的說明。 EN: The publication schedule is… biannual… meaning we put out issues in January and July. 翻譯: 出版時間表是…一年兩次…意思是一月和七月我們會出刊。
EN:Our performance evaluation is… let me see… biannual… so you'll have another one in six months.
翻譯:我們的績效評估是…我想想…半年一次…所以六個月後你還有一次。
請注意：在正式書面寫作（如報告、學術論文、官方文件）中，為求絕對清晰，建議避免使用可能引起混淆的「biannual」，而應明確寫出「twice a year」或「every six months」。
常見短語
What common collocations use "Biannual"?What fixed phrases with "Biannual" should I remember?
biannual event
adjective + noun
一年兩次的活動
biannual meeting
adjective + noun
一年兩次的會議
biannual review
adjective + noun
一年兩次的審查/評估
biannual report
adjective + noun
一年兩次的報告
biannual visit
adjective + noun
一年兩次的訪問
biannual checkup
adjective + noun
一年兩次的檢查/體檢
biannual publication
adjective + noun
一年兩期的出版物
biannual sale
adjective + noun
一年兩次的大特賣
常見錯誤
What are common mistakes with "Biannual"?Which "Biannual" sentences look correct but are wrong?
×The biennial report is published twice a year.
✓The biannual report is published twice a year.
混淆 'biannual'（一年兩次）與 'biennial'（兩年一次）。這兩個詞發音相似但意義完全不同。
×The semi-annual event happens every two years.
✓The biannual event happens twice a year.
誤以為 'biannual' 和 'semi-annual' 意義不同。實際上，在大多數語境中，'biannual' 和 'semi-annual' 都表示「一年兩次」，可以互換使用。
×We hold biannuals meetings.
✓We hold biannual meetings.
錯誤地將形容詞 'biannual' 加上複數形式。'Biannual' 是形容詞，用來修飾名詞，本身沒有複數變化。
×The biannual festival is a great event (context unclear if twice a year or every two years).
✓The festival held twice a year is a great event.
由於 'biannual' 有時可能被誤解（雖然標準定義是「一年兩次」），在需要絕對明確的場合，使用 'twice a year' 或 'semi-annual' 可以避免歧義。
×The report is published biannually.
✓The report is published biannually. (This is actually correct. The mistake is thinking it's wrong.)
誤以為 'biannually' 這個副詞形式不存在或不正確。'Biannually' 是正確的副詞，意思是「一年兩次地」。常見錯誤是避免使用它，而用冗長的方式表達。
詞形變化
What are the word forms of "Biannual"?What are tense/participle forms of "Biannual"?