maintain,remain,keep三个单词有什么不同?

maintain,remain,keep三个单词有什么不同? maintain与remain有啥区别 remain,keep的不同 remain maintain retain reserve preserve的详细区别 dream前面是加maintain 还是remain为什么 last remain keep的区别 maintain Keep ,remain的区别和用法 怎样区分keep,remain,stay的用法? remain ,matain,keep,stay的区别 remain keep有什么区别,怎么用? remain keep是非延续性动词吗? 单词的辨析retain,remain,maintain,stayretain,remain,maintain,stay的区别是什么?各有什么侧重点?1楼回答的不太明显，还有什么答案呢？ 请问：maintain,stay,keep,hold 的区别,谢谢! keep/maintain a record of的意思是甚么丫 keep和remain的区别Food us alive.应该是keep还是remain,要不要单三?具体讲一下keep、remain的区别. remain remain