nullify /ˈnʌlɪˌfaɪ/ ( nullifying, nullified, nullifies )

• 1. 

  V-T To nullify a legal decision or procedure means to declare that it is not legally valid. 使失去法律效力 [正式]

  例：

  They knew the courts could nullify the marriage before the ink was dry.

  他们知道法庭可以在签订婚约的墨汁未干之前，宣布婚姻无效。

• 2. 

  V-T To nullify something means to make it have no effect. 使无效 [正式]

  例：

  A missing or illegible name will nullify your vote.

  遗漏或字迹难以辨认的名字会使你的投票无效。