详细释义 · 难度约 C1（AI 估计）
n.径流；地表流失的水
Runoff is rain or irrigation water that flows away from an area instead of soaking into the ground or evaporating.
Heavy rain caused runoff to flood the nearby road.大雨形成的地表径流淹没了附近的道路。
n.（选举）决选
A runoff is another vote held when no candidate wins enough votes in the first election.
Neither candidate won a majority, so the election went to a runoff.两位候选人都未获得过半选票，因此选举进入决选。
n.（比赛）决赛
A runoff is another round of a competition held after other competitors have been eliminated.
The two finalists will meet in a runoff tomorrow.两名决赛选手将于明天进行决赛。
