“两星期”的英语可以翻译为：fortnight ...

两星期后他们放弃了搜救那名失踪的小孩.The searching for the missing child was abandoned after two weeks.度了两星期假后,我的确感到身体非常舒适.I really feel in the pink after a fortnight's holiday.两星期过去,他们的钱用光了.Two weeks passed. They ran out of money....