challenge的过去分词

1. 挑战，要求决斗，邀请比赛
2. 质疑，怀疑，质问，质询
3. 指责
4. 颇有作为的工作，艰巨任务，艰巨的事，难题
5. 查问口令，盘问
6. 【律】反对
7. 挑战书
8. (对某一选票的效力或投票的资格表示的)异议
9. 【医】激发(指注入抗原以激发免疫应答)

1. 怀疑，质疑，对…怀疑
2. 反对，对...提出异议
3. 【律】宣布反对
4. 激发，刺激，引起
5. 挑战，向…挑战
6. 要求，需要，强烈建议
7. 考查，考验（能力和技巧）
8. 盘问，查问
9. 吠叫
10. 要求参加决斗、竞赛等
11. 挑动
12. 作出、发出或提出挑战
13. 表示异议

1. a demanding or stimulating situation;

   "they reacted irrationally to the challenge of Russian power"
   

2. a call to engage in a contest or fight
3. questioning a statement and demanding an explanation;

   "his challenge of the assumption that Japan is still our enemy"
   

4. a formal objection to the selection of a particular person as a juror
5. a demand by a sentry for a password or identification

1. take exception to;

   "She challenged his claims"
   

2. issue a challenge to;

   "Fischer challenged Spassky to a match"
   

3. ask for identification;

   "The illegal immigrant was challenged by the border guard"
   

4. raise a formal objection in a court of law

1.挑战;难题
Achallenge is something new and difficult which requires great effort and determination.

e.g. I like a bigchallenge 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。
e.g. The new government's firstchallenge is the economy.
新政府面临的第一个难题是经济问题。

2.(成功地)应对挑战，迎接挑战
If someonerises to the challenge, they act in response to a difficult situation which is new to them and are successful.

e.g. The new Germany must rise to thechallenge of its enhanced responsibilities...
一个崭新的德国必须迎接挑战，承担更多的责任。
e.g. They rose to thechallenge of entertaining 80 schoolchildren for an afternoon.
他们一个下午成功接待了80名学童。

3.(对真实性、价值、权威等提出的)怀疑，质疑
Achallenge to something is a questioning of its truth or value. Achallenge to someone is a questioning of their authority.

e.g. The demonstrators have now made a directchallenge 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.怀疑，质疑(真实性、价值、权威等)
If youchallenge ideas or people, you question their truth, value, or authority.

challenge

e.g. 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。
e.g. 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。

5.挑战；向…下战书
If youchallenge someone, you invite them to fight or compete with you in some way.

challenge

e.g. 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。
e.g. 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。

6.(警卫)盘问，查问
If someoneis challenged by a guard, they are ordered to stop and say who they are or why they are there.

e.g. 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
see also: challenging

1. Exploring outer space is a challenge to mankind.
   探索外太空是一项向人类发出的挑战。
2. I accepted a challenge to a tennis match.
   我接受了网球赛的挑战。
3. We should look upon the relative backwardness of our economy as a challenge to greater exertions.
   我们应该把我国经济的相对落后看成是要求我们做出更大努力的一种鞭策。
4. A sentry gave the challenge,“Halt!Who goes there?”
   哨兵喝问:“站住!什么人?”
5. He sent a challenge to run a race.
   他发出了赛跑比赛的挑战书。

1. I did not think he was right, so I challenged him.
   我认为他是不对的,因此向他提出质疑。
2. The job doesn't really challenge him.
   这项工作不能真正地考验他。
3. When I tried to enter the building, the guard at the door challenged me.
   我试图进入大楼时,卫兵查问了我。
4. I challenged him to a game of chess.
   我要求同他下盘棋。
1
5. U.S. business today is challenged by aggressive overseas competitors.
   今天的美国商业受到咄咄逼人的外国竞争者的挑战。
6. His claim to that piece of property is being challenged.
   有人就他对那份财产的声明提出异议。
7. He was busy challenging for the leader of the club.
   他正忙于竞选争当俱乐部领导人。

1. He challenged why I didn't get things ready before.
   他质问我为什么不早点准备。

1. I challenge you to show your proof.
   我要求你拿出证据来。
2. He challenged us to try again.
   他向我们挑战,要我们再试试。

• My challenge to any of the great leaders of the Christian churches..to come and debate the question of religion and free thought.

  出自：R. Lynd

• The tremendous challenge of his post, and the problems he faced.

  出自：D. Acheson

• The Martyrs' Memorial..an occasional challenge to the climbing skills of students.

  出自：E. Longford

• To be challenged of unkindness.

  出自：P. Sidney

• ☆ 1292年进入英语，直接源自古法语的chalenge，意为争论；最初源自拉丁语的calumnia，意为诡计，花招。