twice a year
twice a year — 慣用語
1. used to say that something happens or is done two times during each year
一年兩次
每年會發生或做兩回
used to say that something happens or is done two times during each year
The dentist asks Mira to come back twice a year for cleanings.
牙醫要 Mira 一年兩次回診洗牙。
come back twice a year for regular care
Our club prints a newsletter twice a year, in January and July.
我們社團的通訊一年出兩次，分別在一月和七月。
twice a year with named times
Farm workers test the well water twice a year before planting season.
農場工人在播種季前，一年兩次檢測井水。
Nadia visits her grandparents in Tainan twice a year during school breaks.
Nadia 會利用學校假期，一年兩次去台南看祖父母。
visit people twice a year
The museum closes twice a year so staff can repair the roof.
這間博物館一年會休館兩次，讓員工修屋頂。
- meet twice a year
- publish twice a year
- visit twice a year
- check twice a year
- semiannually
more formal and common in schedules, reports, and official writing
- every six months
more explicit about the time gap between the two events
- biannually
formal but sometimes avoided because some readers find it unclear
- once a year
happening only one time in a year
文法句型
do something twice a year
happen twice a year
用法筆記
Often comes after a verb to show how often an event repeats in a year. It is a plain time-frequency phrase, not a fixed date, so speakers often add the months or seasons when the two events happen.