n.a race (especially in rowing) in which runners-up in the eliminating heats compete for a place in the final race
英汉双解大词典
repechage/ˌrɛpɪˈʃɑːʒ/
1.
N（名词）
a heat of a competition, esp in rowing or fencing, in which eliminated contestants have another chance to qualify for the next round or the final (划船或击剑的)预赛; 被淘汰的选手有机会有资格进入下一轮或决赛