won or decided by a very small distance, or number of points, votes, etc.

a close-run competition/contest/decision/race 胜负难分的比赛/竞赛/裁定/角逐

It was a close-run thing and Millar had to endure a five-minute wait before the judges decided that he had won. 比赛十分激励，难分高下，米勒忍受了5分钟等待的煎熬之后，才听见裁判判定他赢得了比赛。