year的形容词形式

　　Interest will be paid half-yearly in June and December.

　　利息将每半年一次于六月份和十二月份支付。

　　You can become a member by paying the yearly subscription.

　　你通过支付年度会员费可以成为一名会员。

　　The average yearly increment in productivity was 4.5 per cent.

　　生产率的年平均增长量是4.5%。