dead heat
noun [ C ] uk/ˌded ˈhiːt/ us/ˌded ˈhiːt/
（竞赛结果）平局，不分胜负
a competition in which two or more competitors finish at exactly the same time or with exactly the same result
The race ended in a dead heat. 赛跑最终不分胜负。
The opinion polls show the three election candidates in a dead heat (with each other). 民意调查显示3位候选人难分高下。