[tiǎo zhàn]
（挑釁） throw down the gauntlet; challenge; challenge to battle
accept the challenge; take up the gauntlet
接受挑戰
issue one's challenge to ...
向 ... 發出挑戰
She looked at me with challenge.
她帶著挑戰的目光看著我。
The election of the new government was met by a challenge from its opponents.
新政府當選的合法性受到了反對派的挑戰。
（提出競賽） challenge to a contest; challenge