they have been married for 20 years
他们已经结婚20年了
以上为机器翻译结果，长、整句建议使用 人工翻译 。
They have been married for 20 years.
他们结婚已经20年了。
youdao
They will have been married for 20 years by then.
到那时他们结婚将有二十年了。
应用推荐
模块上移
模块下移
不移动