n.两星期;十四天
It's a fortnight to National Day. 离国庆节还有两星期。
The patient lived out another fortnight. 病人又活了两星期。
A fortnight has fourteen days. 两周有十四天。
adj.每两星期一次的;隔周发行的
adv.隔周;每两星期一次地
n.隔周出版物;双周刊