biannually

基本解释

These roles should be reinforced during regular training exercises, such as a mock code, quarterly or biannually.
这种角色应该在每季度或每半年一次的模拟训练之类的惯例训练中得以强化。
By replacing your air filter annually, or biannually if you live in a dusty area, you'll ensure the engine can breathe freely.
每年换一次过滤器或者在沙尘多的地方每半年更换一次能保证你的爱车引擎自由呼吸。
Practice mock codes in the office quarterly or biannually, with inolement of as many staff members as possible and EMS when feasible.
每季度或每隔半年进行一次模拟练习，参加人员要尽可能多，可能的话，这种练习还应当包括急诊医疗系统的成员。