vitiates
v. (使)削弱( vitiate的第三人称单数 ); (使)破坏; (使)损害; (使)无效
If something is vitiated, its effectiveness is spoiled or weakened.
Strategic policy during the War was vitiated because of a sharp division between 'easterners' and 'westerners'...
由于“东方人”和“西方人”之间存在巨大的分歧,战争期间的战略方针没有得到切实的执行。
But this does not vitiate his scholarship.
但这不会威胁到他的奖学金。
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.