vote [sth] downvtr phrasal sepphrasal verb, transitive, separable: Verb with adverb(s) or preposition(s), having special meaning, divisible--for example, "call off" [=cancel], "call the game off," "call off the game."
(proposal: defeat)
投票否决 tóu piào fǒu jué
An overwhelming majority of committee members have voted the proposal down.