challenge
名词:挑战艰巨任务挑战书(比赛等的)邀请,提议质询质疑提出异议
动词:对…怀疑(或质疑)拒绝接受向(某人)挑战(尤指在对方不情愿时)强烈建议(某人做某事)考查…的能力考验…的技巧
Schools must meet the challenge of newtechnology.  学校必须迎接新技术的挑战。
difficulty
名词:困难难题难事困境艰难费劲辛苦困难程度难度
His increasing financial difficulties forced him to take desperate measures.
不断增加的经济困难迫使他采取了铤而走险的办法。
challenge和difficulty区别
challenge释义:
n. 挑战考验怀疑(警卫)叫停盘问(陪审员对某人出庭表示的)反对
vt. 向……挑战考验……能力对……质疑盘问(陪审员对某人出庭表示)反对
展开释义
例句:
This tedious job will bring unprecedented challenges to your life.
这份繁琐工作会给你的生活带来空前的挑战。
词组:
meet the challenge迎接挑战满足要求
rise to the challenge接受挑战,奋起应付挑战
take up the challenge应战
challenge cup挑战杯优胜杯奖杯
difficulty释义:
n. 困难,困境
例句:
If you encounter difficulties, you can ask me for help.
你遇到困难可以找我帮助。
词组:
with difficulty困难地吃力地
have difficulty有困难
in difficulty处境困难
degree of difficulty难度系数,难度
have difficulty in对…有困难在某方面有困难
视频: