- 1一年兩次的（不是「兩年一次」；兩年一次是 biennial）
Biannual means happening twice each year — once, then again about six months later. A biannual meeting, a biannual magazine, a biannual sale. The pieces are bi- (two) and annual (year). Though actually, English speakers mix this up all the time, even careful ones. Biennial means once every two years, and the two words look almost the same. Some people use biannual both ways, which is why a clear writer often says “twice a year” or “every six months” instead. Semiannual is another word for twice a year and is a little less muddy. You meet biannual in office, school, and magazine English; it is a bit formal, but not rare.
組成From bi- (“two”) + annual (“yearly”).
原始詞典資料3 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
biannualadj/bʌɪˈanjuːəl/
- 1
Occurring twice a year; semiannual.
- The annual values were disaggregated into biannual values. Then the biannual values were disaggregated into quarterly values. Finally the quarterly values were disaggregated into the desired monthly values.
- Collection of papers presented at the workshops during the 1988 biannual symposia in February (New Orleans) and May (Innsbruck).
- 2
Occurring once every two years; biennial.
- The relative share of agriculture in GDP of the West Bank (calculated on the basis of fixed 1986 prices, and as a two-year average to deal with the major biannual fluctuations in olive production) declined[…].
- Thus he argues that the members of the National Assembly were independent from the constituencies that elected them, because the latter (the assemblies, administrative and elected) are "biennially renewed," as was the National Assembly. […] This [being responsible to electors] is implicitly the case of the representatives in the National Assembly, who must also face biannual elections[…].
biannualnoun/bʌɪˈanjuːəl/
- 1
Something occurring twice each year.
- It was a biannual from April 1970 to October 1977 and has been a quarterly since fall 1978.
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。