重 点
A challenge is something new and difficult which requires great effort and determination. 挑战
noun [抽象名词] 挑战，难题；挑战书，比赛邀请；质疑，质询；喝停盘查
The new government's first challenge is the economy. 新政府面临的第一项挑战是经济。
verb [vt. 及物动词] 挑战，向……下战书；质疑，拒绝接受；盘问，查问；考验
Democratic leaders have challenged the president to sign the bill. 民主党领导人对总统签署这项法案存有质疑。
- challenge 出现在下面的课文中（提供视频、音频及笔记等可系统性学习）
- Lesson 10 Silicon valley
穷则思变(change)， 富有挑战(challenge)
- 网友用 “Challenge” 造句精选
- I hope that he proves equal to the challenge. 我希望他最后能应付这一挑战。
- Marsyas thought he could play the flute better than Apollo and challenged the god to a contest. 玛息阿觉得他长笛吹得比阿波罗好，便向这位神发出挑战。
- Bill was stimulated by the challenge. 比尔受到该挑战的激励。
- The demonstrators have now made a direct challenge to the authority of the government. 示威者现已对该政府的权威性提出了直截了当的质疑。
- He left a note at the scene of the crime, challenging detectives to catch him. 他在作案现场留了一张纸条，挑衅侦探们去抓他。
- She beat off a challenge to her leadership. 她战胜了对她的领导地位的挑战。
- The new Germany must rise to the challenge of its enhanced responsibilities. 新德国必须奋起应对更艰巨的挑战。
- A third presidential candidate emerged to mount a serious challenge and throw the campaign wide open. 第3位总统候选人上场郑重发出挑战，令这次竞选充满悬念。