挑战

❶challenge to battle; throw down the gauntlet;throw down the glove
❷challenge to a contest
发出～issue a challenge/接受～take up the gauntlet;accept a challenge/躲避～ duck a challenge/对对方的～无动于衷show no reaction to the other side’s toss of the glove/富有～性的任务challenging assignment/～书letter of challenge;challenge