几周以后的英文

两个都对，in表示在多久以后是，用于将来after a year， a few years later two weeks later用于过去

in a day /year after two weeks

两周内 in two weeks两周后after two weeksafter two weeks_百度翻译after two weeks 网络 两周后; [例句]After two weeks, I was allowed home, where I convalesced for three months.两周之后，我获准回家，休养了3个月之后逐渐康复。进行更多翻译

in a day ,in a year ,in two weeks