bi-annual
柯林斯词典
1. ADJ A biannual event happens twice a year. 每年兩次的
You will need to have a routine biannual examination. 你需要做一年兩次的常槼檢查。
2. biannuallyADV 每年兩次地[ADV after v]
Only since 1962 has the show been held biannually. 從1962以後，這個節目才開始每年擧行兩次。
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