(1) 困难(state or quality of being hard or not easy; trouble) [U][N(in)]：do sth with～费力地做某事;do sth without(much/any)～(颇/毫)不费力地做某事;lead to～导致困难出现;have/find no(little/great/much)～(in) finding sth/recognizing sb 找到某物/认出某人没有(几乎没有/非常/颇)费劲;have a lot of～with the work/English grammar 做那工作/学英语语法很费劲;the～of the experiment 做那个实验的困难;〖同〗trouble;

(2) 难事(题)(sth difficult to do， make， solve， understand or deal with) [C， 通常pl]：solve the～of transportation 解决运输难题;overcome the～of meeting people 克服怕见人的畏难心理;find/feel/face/meet with/get over/overcome/present a～发现/觉出/面对/遇到/克服/克服/造成一困难;raise (make/create)～ies over sth 为难(作梗);financial/emotional～ies 财政/感情困难;be in a～(over doing sth)(做某事)有困难;be in～ies 财政有困难;get/run into～ies(with sth)(某事)遇上了困难;get out of a～摆脱困境;〖同〗trouble， problem;〖反〗ease;

←′difficult adj