adj.一年两次的
I have to make a biannual report next Monday. 下周一我得作半年度报告。
In between the meetings, each stockholder receives biannual reports. 两会之间，每位股东都会收到每年两次的总结报告。
The FISU is the supporting organization of the biannual Universiades. 国际大体联是两年一度的大运会的支持机构。
adv.一年二次地(半年一次地)
