annul
/əˈnʌl; ə`nʌl/ v [Tn] (-ll-) declare (sth) no longer valid; abolish; cancel 宣告（某事物）无效; 废止; 取消: annul an agreement/a contract/a law/a marriage 宣告协议[合同/法令/婚姻]无效.
/əˈnʌl; ə`nʌl/ v [Tn] (-ll-) declare (sth) no longer valid; abolish; cancel 宣告（某事物）无效; 废止; 取消: annul an agreement/a contract/a law/a marriage 宣告协议[合同/法令/婚姻]无效.
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