gain和earn的意义区别!

gain和earn的意义区别! earn 和 gain 的区别? earn 和gain的区别 gain和earn区别 earn gain 和win 的区别 意义相近的词辨析：gain和earn 求earn和gain的用法和区别. earn,win,beat,gain,befeat的区别 请问increase和grow ；gain 和earn；pick和cut的区别 区别win get gain earn earn money 与collect money 与gain money的区别 【疑惑啊】earn gain 的具体区别是什么最好能让我完全区分开来~ achive ,gain和reach的区别 gain profit 和 earn profit哪个用法对 为什么 pay 和payment的区别,还有salary, earn, wage gain 和recive的区别 是gain 教育还是recive教育? regain和gain什么区别? If you travel by air,you will (earn) (gain) time.选什么?为什么?EARN和GAIN在什么时候可以互用，什么时候又不可以呢？