challenge

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【词性】：v．

【释义】：

❶ 提出挑战；表示异义；非难；怀疑〔to challenge a claim对所提要求表示异议；to challenge something said or the person who says it对所说的事情或说事情的人提出挑战〕
❷ 向某人提出挑战要求比赛〔He challenged me to a game of checkers．他向我提出挑战要比赛跳棋。〕
❸ 查问时用的口令〔The sentry waited for the password after challenging the soldier．哨兵发出寻问后，等候战士口令。〕‖ n．❶ 挑战❷ 要求，需求，鞭策／challenger n．