N-COUNT (职位或头衔的)挑战者 A challenger is someone who competes with you for a position or title that you already have, for example being a sports champion or a political leader. (职位或头衔的)挑战者 [Also + for]
Draskovic has emerged as the strongest challenger to the leader of the Serbian government. [+ to]
德拉什科维奇一跃成为塞尔维亚政府领导人最大的挑战者。
The One Australia syndicate is to become the sixth challenger for the 1995 Americas Cup.