基本解释发出挑战。同根派生 英汉例句用作不及物动词 (vi.)The trade unions have thrown down the gauntlet.工会已经提出挑战。The fathers challenged the sons to a race.那些父亲们向儿子们挑战进行赛跑。英英字典剑桥英英字典to invite someone to fight or compete with you