单词challenge
n.: 挑战；质疑；质询；挑战书
v.: 考查；盘问；对…怀疑（或质疑）；拒绝接受
网络: 向…挑战；挑战模式；叫板
挑战；艰巨任务:
a new or difficult task that tests sb"s ability and skill
挑战书；（比赛、打斗等的）邀请，提议:
an invitation or a suggestion to sb that they should enter a competition, fight, etc.
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.
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
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)
考查，考验（能力和技巧）:
to test sb"s ability and skills, especially in an interesting way
盘问；查问:
to order sb to stop and say who they are or what they are doing
(新西兰)《挑战》周刊
(澳大利亚)《挑战报》
【医学】(用接触致病性传染物进行的)免疫性试验
【法律】(对陪审官等的)要求回避,表示反对,拒绝
使命;战斗任务;重担子;值得做的工作
(哨兵对行人的)盘问,(对飞机等的)信号盘问;口令
质问;怀疑,驳斥;异议
要求,需求,鞭策
艰巨任务,难题
(美国,英国)《挑战》月刊
挑战,挑战书,决斗书;(比赛等的)提议
挑战;挑衅;威胁
【军事】向…发出盘问口令[信号]
【法律】表示异议
【法律】对(陪审官等)要求回避,宣布反对,拒绝
〔美国〕不承认(投票人有投票资格)
(猎犬发现猎物时)吠叫
问,反诘,诘问;盘问
要求,需要;引起
向…挑战
提出挑战
复数：challenges
过去分词：challenged
现在分词：challenging
v.+n.:
meet challenge,face challenge,accept challenge,pose challenge,present challenge
adj.+n.:
big challenge,real challenge,great challenge,serious challenge,immediate challenge
n.testtrialtaskcontestencounterv.daredefythrow down the gauntletconfrontbrave
I was finding it a challenge to keep another campaign commitment: cutting the White House staff by 25 percent.
我发现要兑现我的另一个竞选承诺也不容易：把白宫的工作人员的人数减少25%。
That was why the Delegation was pleased to see that WIPO had taken up the challenge, in the previous years.
这就是代表团很高兴看到WIPO在过去几年中迎接了该挑战的原因。
He said it was a major challenge to get world leaders to take the tourism industry seriously.
他表示，让世界各国领导严肃对待旅游业，是一项重大挑战。
Yes, Bree was afraid of many things. But if there was one thing she wasn"t afraid of, it was a challenge.
是的，bree害怕很多东西，但是唯独挑战，是她所不畏惧的。
Once I understood, I began brushing up on my history. I learned that this was a challenge I would have to face daily in my life.
一旦我明白了原因所在，我开始回顾我的历史，然后我就发现，这是一个我将不得不在一生中每天都要面对的挑战。
I believe that it would be a challenge and a chance for me to be a HP man.
我相信，这将是一个挑战，也是一个机会，对我来说是一个惠普的男子。
Ensuring a stable supply of energy has always been a challenge for Japan , every since industrialization .
作为一个工业发达国家，日本面临着一个很大的课题，那就是如何保证能源供应的稳定。
Paul"s request presented a bit of a challenge since I am by no means an expert on Africa, but it was a welcome one nonetheless.
保罗的这一要求对我来说可谓是一个小小的挑战，因为我绝不是什么非洲问题的专家，不过，我还是很乐意地接受了这项任务。
The main challenge of this redesign is for the pillows at all ibis hotels to be memorable enough to make them worth being their logo.
这次改版的主要挑战是要在所有宜必思酒店的枕头难忘足以让他们值得他们的标志。
"You never know whether he"ll give you intelligence or brute force, " which is a bit of a challenge, Kurosawa admits.
“他真的非常像化身博士，”《光》的导演黑泽清说，“你永远不会知道他是要展现智慧还是蛮力。”