challenge

英[ˈtʃælɪndʒ]美[ˈtʃælɪndʒ]

n.挑战，比赛邀请，质疑；

v.对…怀疑，挑战，考验，盘问；

复数：challenges;

第三人称单数：challenges;

过去式：challenged;

过去分词：challenged;

现在分词：challenging;

例句

She was poised to challenge for the party leadership.她已准备好竞争*內领导地位。

No one could challenge her supremacy in gymnastics.她是*优秀的体操运动员,无人能胜过她。

My preference is that we (should) challenge the other groups to a friendly competition.我喜欢向别的组挑战, 来一个友谊竞赛。

his title challenge to the heavyweight champion他问鼎重量级冠*的比赛

Ex-colonial countries began to challenge the cultural dominance of Europe.摆脫了殖民统治的国家开始挑战欧洲的文化统治。

a book written to challenge prejudices about disabled people质疑歧视残疾人现象的书

The job doesn't really challenge him.这项工作不能真正地考验他。

I accepted his challenge to run a race.我接受了和他赛跑的挑战.

Q : Will IELTS change in any way in challenge of iBT - TOEFL?应对新托福IELTS会有什么变化 吗 ?

What did he do in reply to your challenge?你提出与他较量,他作何反应?

英语六级真题

The video challenge does not put individual students on the hot seat—so it's less intimidating by design.

The challenge is if certain types of people are doing something, it's difficult for other people to break into it, said Po-Shen Loh, the head coach of last year's winning U.S.Math Olympiad team.

The Math Video Challenge is a competition, but a collaborative one.

In the past few years, MathCounts added two new middle school programs to try to diversify its participant pool—the National Math Club and the Math Video Challenge.

After the high-pressure Countdown round at this year's national MathCounts competition, in which the top 12 students went head to head solving complex problems in rapid fire, the finalists for the Math Video Challenge took the stage to show their videos.

2% in November and December at stores open more than a year, a disappointing holiday season performance that capped a difficult year for a department store chain facing wideranging challenges.

How does one figure out who is a weak teacher? Yes, that's a challenge.

He challenges Liqa Raschid-Sally's conclusion.

While we argue phasing out racial terminology ( ' , 术语 ) in the biological sciences, we also acknowledge that using race as a political or social category to study racism, although filled with lots of challenges, remains necessary given our need to understand how structural inequities and discrimination produce health disparities ( ' , 差异 ) between groups, Yudell said.

Those simultaneous challenges appear less overwhelming with increasingly better answers to a centuries-old question: how to make power portable.

Doing away with racial discrimination is challenging.

At least three Russian stations are already operating in Antarctica, part of its effort to challenge the dominance of the American GPS, and new stations are planned for sites like the Russian base, in the shadow of the Orthodox Church of the Holy Trinity.

To make matters worse, these schools are ill-equipped to graduate these students— young adults who face specific challenges and obstacles.

They tend to offer too many less challenging courses.

Students who take more challenging classes and spend more time studying do learn more.

On entering college, Nijay Williams had no idea how challenging college education was.

It fails to prepare students to face the challenges of modem times.

In particular, Arum and Roksa found, college students were not developing the critical thinking, analytic reasoning and other higher-level skills that are necessary to thrive in today's knowledge-based economy and to lead our nation in a time of complex challenges and dynamic change.

If, for example, building codes included green construction guidelines, most developers would be too lazy to challenge them.

Economic inequality is the defining challenge of our time.

After the high-pressure Countdown round at this year's national Math Counts competition, in which the top 12 students went head to head solving complex problems in rapid fire, the finalists for the Math video Challenge took the stage to show their videos.

Another challenge to language survival is television.

Economic inequality is the "defining challenge of our time".

In the past few years, Math Counts added two new middle school programs to try to diversify its participant pool—the National Math Club and the Math video Challenge.

It is yet a challenge to explain the cause-and-effect relationship between sleep and nutrition.

One key challenge facing young scientists is how to be open without becoming scientifically vulnerable.

So now, the main challenge was to find the right material for printing clothes with, I mean the material you feed the printer with.

The biggest and most exciting challenge of this technology is how to creatively leverage this ever-growing amount of data to deliver cost savings, improvements and tangible benefits to both businesses and citizens of these smart cities.

The challenge here, of course, is ensuring that what an amateur community considers to be responsible, actually is.

The Math video Challenge is a competition, but a collaborative one.

This is a grand challenge for our age and it may require an "irrational" response.

柯林斯高阶英汉双解学习词典释义

N-VAR

挑战;难题

A challenge is something new and difficult which requires great effort and determination.

例句

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.

例句

N-VAR

(对真实性、价值、**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.

例句

VERB

怀疑，质疑(真实性、价值、**等)

If you challenge ideas or people, you question their truth, value, or authority.

例句

VERB

挑战；向…下战书

If you challenge someone, you invite them to fight or compete with you in some way.

例句

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.

例句

英汉词典释义

n.

挑战, 邀请比赛

怀疑, 质问

艰巨的任务

(警卫等)查问口令；盘问

要求；需要；鞭策

【法律】(对陪审员的出庭等提出的)反对

【医学】激发(指注入抗原以激发免疫应答)

vt.

挑战

质疑

考验

【*事】向…查问口令；盘问

要求说明原因；对…质疑；反对

指责；驳斥；否认

对…构成考验；激励，鞭策；促使

要求；需要

【法律】对陪审员的合法性表示反对

vi.

提出挑战；要求竞赛(或竞争)

英英词典释义

Noun

1. a demanding or stimulating situation;

2. a call to engage in a contest or fight

3. questioning a statement and demanding an explanation;

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

Verb

1. take exception to;

2. issue a challenge to;

3. ask for identification;

4. raise a formal objection in a court of law

行业词典

体育： 挑引；引诱；阻截；争抢；挑战；邀请比赛；劲敌；

医学： 激发：在免疫学上，指(1)对以前致敏的个体给予抗原以激发免疫反应；(2)如此激发的一种情况；