hard difficult different

hard difficult different different、difficult、hard三者的区别和用法 different、difficult的区别、用法 hard 和 difficult的区别 hard、difficult的区别、用法 hard 和difficult的区别 difficult与different的区别,用法 hard与difficult有什么区别? 请问difficult和hard的区别谢谢 difficult 和 hard 的区别到底是什么? 英语中形容词difficult和hard区别 N_____is difficult if you study hard.