1、回忆
... (it 为形式主语，动词不定式为真正主语) look back on 回首；回忆；回顾 look out 当心，小心；留神 ...
2、回顾
... make a mistake 犯错误 look back on 回顾 focs on 集中（注意力）于 ...
look k back on回顾;回忆
look back on history回顾历史
Look Back On Anger回顾愤怒
look back on detail回顾例如
to look back on回溯
look back on sth回忆
Look Back on retrospect回顾过去
look back on the past回顾过去
don't look back on yesterday磨叽吃货不蛋定