全力羽羽
challenge英 ['tʃælɪndʒ] 美 ['tʃælɪndʒ] 形容词: challengeable过去式: challenged过去分词: challenged现在分词: challenging第三人称单数: challenges 基本释义n.挑战；邀请比赛；盘问；质疑v.向 ... 挑战；盘问；质疑用作名词 (n.)The crossing of this dangerous river was a challenge to most of us. 对我们大多数人来说,横渡这条充满危险的大河确实是个挑战。He accepted his friend's challenge to swim across the river. 他接受朋友提出的挑战，游过这条河。We accepted their challenge to a baseball game. 我们接受了他们棒球邀请的挑战。He ignored the sentry's challenge to halt. 他不理睬哨兵喝令止步的盘问。Their legal challenge was unsuccessful. 他们的法律质疑未获成功。查看更多 用作动词 (v.)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。New competitors are emerging to challenge the old economic arrangements. 新的竞争对手正在崛起，向旧的经济布局挑战。
安哥拉天使
重点词汇：hallenge 分别可以来作名词、物动词、宾补动词。用作名词意思为挑战；盘问；质疑；怀疑，用作物动词意思为质疑；向…挑战，用作宾补动词意思为 提出挑战，要求竞赛（或竞争）；驳斥。
challenge用作名词的基本意思是“挑战,邀请比赛”。引申可指“具有挑战性的事物”“艰巨的任务”; 也可指对某事的正确性或合法性的“质疑”; 还可指哨兵发出的“止步命令,喝停盘问”。例句：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。
challenge用作宾补动词的基本意思是“挑战”,指通过决斗或其他较量方式解决争端。引申指对某事的正确性、合法性提出“质疑”; 也可指“考验某人的能力”“激发某人做某事”; 还可指哨兵“喝令站住”,盘问诸如身份、姓名、意图等; 亦指“要求”“需要”。
例句：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。
challenge是及物动词,可接名词、代词或从句作宾语,也可接以动词不定式充当补足语的复合宾语。可用于被动结构。列句: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。
challenge with
The challenge with some older groups was to get them to focus on behaviours.
对于年纪稍长的人群来说，挑战在于让他们关注行为。
A huge challenge with deploying solar energy on a large scale is that the sun doesn't shine all the time.
大规模部署太阳能的一个重大挑战是，太阳并不是在所有时间都当空高照。
Now automobile manufacturer Audi is stepping up to the challenge with a fuel made from carbon dioxide and water.
奥迪公司现在正加快脚步，挑战一种由二氧化碳和水合成的新燃料。
