chal·lenge1 /ˈtʃæləndʒ/ ●●● S2 W2 AWL noun 1 STH difficult 困难的事 [countableC, uncountableU]DIFFICULT something that tests strength, skill, or ability, especially in a way that is interesting 挑战,具有挑战性的事物challenge of The company is ready to meet the challenges of the next few years. 公司已准备好迎接今后几年的挑战。
the challenge of doing something I relish the challenge of rebuilding the club. 我从重建俱乐部的挑战中获得乐趣。
face/take on/accept etc a challenge (=be ready to deal with one) 面对/接受等挑战 Martins now faces the biggest challenge of his career. 马丁斯现在面临他事业上最大的挑战。
meet a challenge/rise to a challenge (=successfully deal with one) 迎接挑战 a new and vibrant initiative to meet the challenge of the 21st century 一项迎接21世纪挑战的令人兴奋的新举措
intellectual/physical challenge the intellectual challenge of postgraduate research 研究生研究工作在智力上的挑战
2 question STH 质疑某事 [countableC]ACCEPT when someone refuses to accept that someone or something is right and legal 〔对某人或某事的正确性、合法性等的〕质疑challenge to a direct challenge to the Governor’s authority 对总督权威的直接质疑
challenge from The president faces a strong challenge from nationalists. 总统面临民族主义者的强烈质疑。
pose/represent/present a challenge (to somebody) The strike represented a serious challenge to the government. 此次罢工是对政府的严峻挑战。
mount/launch a challenge They decided to mount a legal challenge to the decision. 他们决定对这项判决提出上诉。
3 competition 竞争ASK FOR something/ASK somebody TO DO something [countableC] when someone tries to win something or invites someone to try to beat them in a fight, competition etc 挑战,〔比赛等的〕提议,邀请challenge for They are ready to mount a challenge for the championship. 他们准备发起挑战争夺冠军。
They threw down the challenge that he couldn’t wash 40 cars in one hour (=invited him to try to do it). 他们激将他,说他不可能在1小时内擦洗40辆汽车。
The prime minister narrowly avoided a leadership challenge last year. 去年首相侥幸避过了一次对他领导地位的挑战。
4. stop 停止 [countableC]ASK FOR something/ASK somebody TO DO something a demand from someone such as a guard to stop and give proof of who you are, and an explanation of what you are doing 喝停盘问 n COLLOCATIONSverbsmeet a challenge (=deal with one)Here are a few tips to help you meet the challenges of university life.
face a challenge (=have to deal with one)The company still faces some challenges.
accept a challenge (=try to deal with one)He was ready to accept new challenges.
take on a challenge (=accept one)The new headteacher has taken on the challenge of improving the school.
present/pose a challenge (=be a difficult one)These changes pose a real challenge to farmers.
provide a challenge (=be an interesting one)Her new job provided a real challenge.
rise to a challenge (=deal successfully with it)It was a difficult project but we rose to the challenge.
love/enjoy/relish a challengeChildren enjoy a challenge so the work should not be too easy.
adjectivesa big/major/huge/tremendous challengeBuilding the tunnel presented a major challenge to engineers.
a serious challengeAt the moment we are facing a serious environmental challenge.
a real challenge (=a difficult one)On Monday, Sharapova faced her first real challenge of the tournament.
a formidable/daunting/tough challenge (=a very difficult one)How to deal with waste is a daunting challenge for the west.
the biggest challenge of somethingThis could be the biggest challenge of his career.
an intellectual/physical/technical etc challengeI love the physical challenge of climbing.
threw down ... challenge• It was they, not we, who threw down the challenge.
From Longman Business Dictionary
challengechal·lenge /ˈtʃæləndʒ/ noun [countableC]2something difficult that you feel determined to solve or achieveNow the company’s challenge is to work out a plan to settle its $1.5 billion in debts.
Population growth is the most formidable challenge facing the nation.
3a refusal to accept that something is right and legalThe suit is a major challenge to Georgia’s election laws.