短语词组短语think k back 回想think back on 回想起think back song 回想曲think back la 回想think back then 回想起来;想想从前Think back on yesterday 回望过去的日子;回首过去;回到过去When I think back 当我回想起过去的I think back 想当年think back to those 回想起那些时光 返回 think back