挑战

1. throw down the gauntlet; challenge to battle

♦ ~的口吻 a provocative tone

♦ 接受~ take up the gauntlet; accept a challenge

2. challenge to a contest

♦ 他向我~, 下一盘围棋。 He challenged me to a game of weiqi (go chess).

~书 a letter of challenge; challenge