vitiates
v.
（使）削弱( vitiate的第三人称单数 );
（使）破坏;
（使）损害;
（使）无效;
例句:
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Yet prohibition itself vitiates the efforts of the drug warriors.
然而,正是禁令本身使贩毒战士的努力归于实效.
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The illusion posits as winning, ups and favourables to stay-thus vitiates the play.
来自SA
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Morgan vitiates such plot as there is by choosing not to revisit the queen's low-point, the death of Diana.
来自WSJ
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Meanwhile, the new White House plan further vitiates the remnants of cost-control that remained in the House and Senate bills.
来自WSJ