study well与learn well有什么区别?

study well与learn well有什么区别? play well与well played用法有什么区别? well done与well down 有什么区别? well know 与well-know 有什么区别 study hard,()()()learn maths well.怎么填空 learn 和study有什么区别? learn和study的区别有什么 study和learn有什么区别? study 和 learn有什么区别? study,learn,research有什么区别阿? learn & study有什么区别 请问：as well, as well as, also,either与too 有什么区别?