DICT.TW Dictionary Taiwan

 bi·year·ly /(ˌ)baɪˈjɪrli/
 (a.)每年兩次;二年一次

 biyearly
      adj 1: occurring every second year; "they met at biennial
             conventions" [syn: biennial]
      2: occurring or payable twice each year [syn: semiannual, biannual]
      adv 1: every two years; "this festival takes places biennially"
             [syn: biennially]
      2: twice a year [syn: semiannually]