sudden death
noun [ U ] uk/ˌsʌd.ən ˈdeθ/ us/ˌsʌd.ən ˈdeθ/
（某些体育比赛的规则，在特定时间后，首先得分者获胜）突然死亡
(in some sports) a rule that the first person or team to score after a particular time will win the game
With the score tied after extra time, the game went to sudden death. 加时赛后比分依然持平，比赛进入突然死亡阶段。