bimonthly

The group holds bimonthly meetings in January, March, May, and so on.这个团体每两个月召开一次会议，分别在一月、三月、五月等，如此类推。

The group holds bimonthly meetings on the first and third Tuesday of each month.这个团体每月召开两次会议，分别在每月的第一个和第三个星期二。