challenge
['tʃælindʒ]
n.挑战, 邀请比赛, 盘问, 质疑 v.向 ... 挑战, 盘问, 质疑
例句与用法：
The time was ripe for a challenge to the power of the government.
时机已经成熟，可以向政府权力提出挑战了。
They had challenged and beaten the best team in the world.
他们曾向世界上最强的球队挑战并将他们打败。
This career offers a challenge.
这份职业具有挑战性。
Nowadays no one will challenge the fact that the earth is round.
现在没有人会对地球是圆的这一事实提出异议。
词形变化：
形容词: challengeable |
动词过去式: challenged |
动词过去分词: challenged |
动词现在分词: challenging |
动词第三人称单数: challenges |
详细释义：
n.
1. 挑战; 邀请比赛[C][+to-v]
He received a challenge to a TV debate.
他接到电视辩论的挑战。
2. 质疑; 指责; 异议[C]
3. 颇有作为的工作; 艰巨的事[C]
To build a road in the mountainous area was a real challenge.
在山区修筑公路确是艰巨的事。
He wants a career that offers a challenge.
他要有挑战性, 能有一番作为的事业。
4. (哨兵, 警卫等)查问口令; 盘问[C]
I was met with a challenge when approaching the post.
我在走近哨所时被查问身份。
5. 【律】(对某陪审员出庭等表示的)反对[C]
6. 有挑战性[U]
vt.
1. 向……挑战[(+to)][O2]
I challenged him to show his proof.
我要他拿出证据。
2. 对……提出异议; 怀疑; 反对
He challenged my view on that matter.
他就我对那件事的看法提出异议。
3. 要求, 需要; 刺激, 激发[O2]
The new position challenged him to study still harder during his spare time.
那个新职位激发他在业余时间更加努力学习。
The event challenges an explanation.
那个事件需要解释。
4. (哨兵, 警卫等)查问; 盘问
5. 【律】宣布反对(某陪审员等)
短语词组：
rise to the challenge
1. 奋起应付挑战
They could be expected to rise to the challenge of risk.
可以指望他们会奋起应付危险局面。