challenge

noun

1. 挑战；艰巨任务
   a new or difficult task that tests sb's ability and skill
   1. an exciting/interesting challenge
      令人激动的 / 令人感兴趣的挑战
   2. The role will be the biggest challenge of his acting career.
      扮演这个角色将是他演艺生涯中最大的挑战。
   3. to face a challenge (= to have to deal with one)
      面临挑战
   4. Destruction of the environment is one of the most serious challenges we face.
      环境的破坏是我们所面临的最严峻的挑战之一。
   5. Schools must meet the challenge of new technology (= deal with it successfully) .
      学校必须迎接新技术的挑战。
2. 挑战书；（比赛等的）邀请，提议
   an invitation or a suggestion to sb that they should enter a competition, fight, etc.
   1. to accept/take up a challenge
      接受挑战
   2. to mount a challenge
      发起挑战
3. 质询；质疑；提出异议
   a statement or an action that shows that sb refuses to accept sth and questions whether it is right, legal, etc.
   1. It was a direct challenge to the president's authority.
      这是对主席权威的直接质疑。
   2. Their legal challenge was unsuccessful.
      他们的法律质疑未获成功。

verb

1. 对…怀疑（或质疑）；拒绝接受
   to question whether a statement or an action is right, legal, etc.; to refuse to accept sth
   1. The story was completely untrue and was successfully challenged in court.
      此案情纯属捏造，已在法庭上被揭穿。
   2. She does not like anyone challenging her authority.
      她不喜欢任何人挑战她的权威。
   3. This discovery challenges traditional beliefs.
      这项发现是对传统信念的冲击。
2. 向（某人）挑战；（尤指在对方不情愿时）强烈建议（某人做某事）
   to invite sb to enter a competition, fight, etc.; to suggest strongly that sb should do sth (especially when you think that they might be unwilling to do it)
   1. Mike challenged me to a game of chess.
      迈克硬逼着要和我下一盘棋。
   2. The opposition leader challenged the prime minister to call an election.
      反对党领袖要求首相宣布进行大选。
3. 考查…的能力；考验…的技巧
   to test sb's ability and skills, especially in an interesting way
   1. The job doesn't really challenge her.
      这项工作不能真正考验出她的能力。
4. 盘问；查问
   to order sb to stop and say who they are or what they are doing
   1. We were challenged by police at the border.
      我们在边境受到警察盘问。

1. N-VAR 挑战;难题
   A challenge is something new and difficult which requires great effort and determination.
   1. I like a big challenge and they don't come much bigger than this...
      我喜欢大的挑战，而所有挑战中再没有比这更大的了。
   2. The new government's first challenge is the economy.
      新政府面临的第一个难题是经济问题。
2. PHRASE (成功地)应对挑战，迎接挑战
   If someone rises to the challenge, they act in response to a difficult situation which is new to them and are successful.
   1. The new Germany must rise to the challenge of its enhanced responsibilities...
      一个崭新的德国必须迎接挑战，承担更多的责任。
   2. They rose to the challenge of entertaining 80 schoolchildren for an afternoon.
      他们一个下午成功接待了80名学童。
3. N-VAR (对真实性、价值、权威等提出的)怀疑，质疑
   A challenge to something is a questioning of its truth or value. A challenge to someone is a questioning of their authority.
   1. The demonstrators have now made a direct challenge to the authority of the government.
      示威者现在直接对政府的权威发出了质疑。
4. VERB 怀疑，质疑(真实性、价值、权威等)
   If you challenge ideas or people, you question their truth, value, or authority.
   1. Democratic leaders have challenged the president to sign the bill...
      民主党领袖对总统签署这项法案提出了质疑。
   2. The move was immediately challenged by two of the republics...
      此项动议立即遭到其中两个共和国的反对。
   3. I challenged him on the hypocrisy of his political attitudes.
      我就他虚伪的政治观点质问他。
5. VERB 挑战；向…下战书
   If you challenge someone, you invite them to fight or compete with you in some way.
   1. A mum slashed a neighbour's car tyre and challenged her to a fight after their daughters fell out...
      两家的女儿吵起来后，一个妈妈划破了邻居的车胎，说要和她较量较量。
   2. He left a note at the scene of the crime, challenging detectives to catch him...
      他在犯罪现场留了个条儿，向警探挑衅。
   3. We challenged a team who called themselves 'College Athletes'.
      我们向一个自称“大学运动员”的队下了战书。
   4. Challenge is also a noun.
      
   5. A third presidential candidate emerged to mount a serious challenge and throw the campaign wide open.
      第三位总统候选人的杀出对前两位构成了严峻挑战，并使得选举形势扑朔迷离。
6. VERB (警卫)盘问，查问
   If someone is challenged by a guard, they are ordered to stop and say who they are or why they are there.
   1. The men apparently opened fire after they were challenged by a patrol.
      显然，那些人是在受到一支巡逻队的盘问后开的火。
7. See also: challenged

1. The post will give him a powerful political base from which to challenge the Kremlin
   这个职位将给他提供一个强有力的政治基点来挑战克里姆林宫。
2. South Africa's ruling National Party has beaten off a right-wing challenge.
   南非执政的国民党已经击退了右翼分子的一次挑战。
3. His challenge to Mrs Thatcher brought her down.
   他的挑战导致了撒切尔夫人的下台。
4. I like a big challenge and they don't come much bigger than this
   我喜欢大的挑战，而所有挑战中再没有比这更大的了。
5. The new government's first challenge is the economy.
   新政府面临的第一个难题是经济问题。
6. The new Germany must rise to the challenge of its enhanced responsibilities
   一个崭新的德国必须迎接挑战，承担更多的责任。
7. They rose to the challenge of entertaining 80 schoolchildren for an afternoon.
   他们一个下午成功接待了80名学童。
8. The demonstrators have now made a direct challenge to the authority of the government.
   示威者现在直接对政府的权威发出了质疑。
9. Democratic leaders have challenged the president to sign the bill
   民主党领袖对总统签署这项法案提出了质疑。
10. The move was immediately challenged by two of the republics
    此项动议立即遭到其中两个共和国的反对。
11. I challenged him on the hypocrisy of his political attitudes.
    我就他虚伪的政治观点质问他。
12. A mum slashed a neighbour's car tyre and challenged her to a fight after their daughters fell out
    两家的女儿吵起来后，一个妈妈划破了邻居的车胎，说要和她较量较量。
13. He left a note at the scene of the crime, challenging detectives to catch him
    他在犯罪现场留了个条儿，向警探挑衅。
14. We challenged a team who called themselves 'College Athletes'.
    我们向一个自称“大学运动员”的队下了战书。
15. The men apparently opened fire after they were challenged by a patrol.
    显然，那些人是在受到一支巡逻队的盘问后开的火。
16. They plan to challenge the constitutionality of the law.
    他们计划对该法的合宪性提出质疑。
17. I draw strength from the millions of women who have faced this challenge successfully
    我从数百万成功面对这种挑战的女性身上汲取力量。
18. The world community should not flinch in the face of this challenge
    国际社会在面对这一挑战时不应该回避。
19. I need a new challenge and a fresh start somewhere else.
    我需要一个新的挑战，换个地方重新开始。
20. The challenge for American leadership is this: Can we put our economic house in order?
    美国领导层面临的挑战是：我们能否处理好自己的经济问题？
21. It was ill-prepared to meet this challenge.
    应对这一挑战明显准备不足。
22. The planned general strike represents an important economic challenge to the government
    这场有计划的总罢工是政府面临的一个重大经济挑战。
23. Our challenge is to motivate those voters and inspire them to join our cause
    我们面临的挑战是如何调动那些选民的积极性并鼓励他们加入我们的事业。
24. It is an enormous challenge but we hope to meet it within a year or 18 months
    这是一个巨大的挑战，但是我们希望在1年或18个月之内能够战胜它。
25. This challenge will occupy Europe for a generation or more.
    这将是欧洲在未来二三十年或者更长的时间里所要面临的挑战。
26. I relish the challenge of doing jobs that others turn down
    我喜欢挑战别人拒绝做的工作。
27. Miranda has drive and energy to spare and has now taken on an even bigger challenge.
    米兰达有使不完的干劲和精力，现在已经接受了一个更大的挑战。
28. My experience as player, coach and manager has prepared me for this ultimate challenge.
    当球员、教练和主教练的经历锻炼了我，使我能够应对这一终极挑战。
29. She looked at me with challenge.
    她带着挑战的目光看着我。
30. The election of the new government was met by a challenge from its opponents.
    新政府当选的合法性受到了反对派的挑战。

noun

1. a demand by a sentry for a password or identification

2. questioning a statement and demanding an explanation
   1. his challenge of the assumption that Japan is still our enemy

3. a formal objection to the selection of a particular person as a juror

4. a call to engage in a contest or fight

5. a demanding or stimulating situation
   1. they reacted irrationally to the challenge of Russian power

verb

1. raise a formal objection in a court of law

   Synonym:    take exception

2. ask for identification
   1. The illegal immigrant was challenged by the border guard

3. issue a challenge to
   1. Fischer challenged Spassky to a match

4. take exception to
   1. She challenged his claims

   Synonym:    disputegainsay