casting vote
noun /ˌkɑːstɪŋ ˈvəʊt/
/ˌkæstɪŋ ˈvəʊt/
[usually singular]- the vote given by the person in charge of an official meeting to decide an issue when votes on each side are equal
(会议主席在赞成票和反对票票数相等时所投的)决定票 - You have the casting vote.
你有决定性的一票。 - The chairman gave his casting vote in favour.
主席投了决定性的赞成票。
词源early 17th cent.: from an obsolete sense of cast ‘turn the scale’. - You have the casting vote.