Question

biannual 【biannual】adj. 一年二度的Our school doctor recommends a biannual visit to the dentist; I am going to the dentist's for the second time this year.我们校医院建议一年去看牙医两次，我要去看这年的第二次。

Accepted Answer

[baɪ'ænjuəl] 
biannualoccurring or payable twice each year
Use biannual to describe something that happens two times a year. Cleaning out the garage may be a biannual project in your household, or your dentist might insist on biannual check-ups.
When you break apart the word biannual, it’s easy to remember what it means. The prefix bi-, meaning “two,” tips you off that this is something that happens twice. And you’re probably already familiar with annual, which describes something that happens once a year. Put it together and you have biannual: twice a year. Whether you’re describing formal events or the frequency of your haircuts, you can use biannual anytime you need to say that something happens twice a year.
All forms of 'biannual' will appear on average once every 101020 pages.annualannuallybiannualsemiannualbiannuallysemiannually

Front	biannual
Pron	[baɪ'ænjuəl]
Back	【biannual】 adj. 一年二度的 Our school doctor recommends a biannual visit to the dentist; I am going to the dentist's for the second time this year. 我们校医院建议一年去看牙医两次，我要去看这年的第二次。
Vocab	biannualoccurring or payable twice each year Use biannual to describe something that happens two times a year. Cleaning out the garage may be a biannual project in your household, or your dentist might insist on biannual check-ups. When you break apart the word biannual, it’s easy to remember what it means. The prefix bi-, meaning “two,” tips you off that this is something that happens twice. And you’re probably already familiar with annual, which describes something that happens once a year. Put it together and you have biannual: twice a year. Whether you’re describing formal events or the frequency of your haircuts, you can use biannual anytime you need to say that something happens twice a year. All forms of 'biannual' will appear on average once every 101020 pages. annual annually biannual semiannual biannually semiannually

Biannual Year You’re Baɪ'ænjuəl Adj 一年二度的 School Doctor