difficultadj.困难的;艰难的;(人)难对付的;不易相处的
difficult index难度指数
difficult times艰难困苦时期
difficult novel难读懂的小说
difficult point难点
difficult parts难度动作
difficult dance有难度的舞蹈
difficult issue难点
difficult sites困难立地
difficult access难以接近
difficult labour难产