Keep ,remain的区别和用法

Keep ,remain的区别和用法 remain和keep的区别和用法(回答正确且详细者追加100分） retain 和remain的区别和用法? keep,remain和retain的区别书上写的注释都是保持,保留.这三个词用法有什么区别? last remain keep的区别 be/keep/remain calm 和 calm sb.down的区别 怎样区分keep,remain,stay的用法? 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. retain、stay、keep的用法区别还有remain这四个的区别 请问remain stay keep 用法上有什么区别 remain和leave的用法讲一下remain和leave的区别 remain和remind的区别（分别说一下用法） remain ,matain,keep,stay的区别 remain 和require 的用法 remain doing 和remain done的区别 borrow,lend和keep的区别用法 remain与seem的用法区别 be/keep/remain calm 和 calm sb.down的区别 知道的