to stop sth from happening or being done by using your official authority (= by using your veto) 否决◆The takeover was vetoed by the European Commission. 这项收购遭到欧盟委员会的否决。
to refuse to accept or do what sb has suggested 拒绝◆The union vetoed the introduction of six-month contracts. 工会拒绝采用六个月的合同。