challengen.挑战；邀请比赛；盘问；质疑v.向 ... 挑战；盘问；质疑challenge from globalization全球化挑战challenge in the guest court客场挑战Challenge sb's right to vote面貌有很大改观challenge-response protocol挑战-应答协议Challenge for the French left法国右翼的挑战challengesb.'s right to vote马到成功challenges and opportu-nities挑战与机遇Challenges for a Webbed Society网络社会的挑战Challenge of growing air traffic空中航线面临挑战challenge system of registration异议登记