It's been four and a half months now that I've been in and

我加入部队有四个半月了，

想当军人的理由 - SpeakingMax英语口语达人

The coupon is expressed as an annual amount; you get half of it every six months.

票息是以年为单位计算的,每六个月获得一半

耶鲁公开课 - 金融市场课程节选

If you have a bond with an interest rate of 4.375% -that's not an easy one to divide by two but you would get half of that every six months until maturity.

如果你持有一种利率为4.375%的债券,这个数除以2有点难算,而在债券到期前,每半年你能得到4.375%一半的券息

耶鲁公开课 - 金融市场课程节选