The art show is a biannual event that won't happen again for two more years.艺术展是两年一度的活动，下次举办要再过两年。You will need to have a routine biannual examination.你得接受一年两次的例行检查。The committee has just published its biannual report.委员会刚刚公布了半年报告。The group holds biannual meetings in December and July.这个团体在每年的十二月和七月举行一年两度的会议。