difficult of难以, 很难
difficultadj.困难的;艰难的;(人)难对付的;不易相处的
difficult position of woman女性生存困境
difficult position of value价值困境
difficult-to-machine job难机器(上)加工(的)工件
difficult to enforce the law执行难
difficultly soluble nutrient难溶性养分
difficulties in finding jobs就业困难
difficult to obtain material难于获得的材料
difficult drilling formation难钻进地层
Difficult times lie ahead.困难时期将要来临。