vt.宣告无效，取消，废除

原形：annul第三人称单数：annuls过去式：annulled过去分词：annulled现在分词：annulling

The contract was annulled due to fraudulent activities.
这份合同因欺诈行为而被宣布无效。
Their marriage was annulled after it was discovered they were cousins.
在发现他们是表亲后，他们的婚姻被宣告无效。
The court annulled the decision of the lower court, citing procedural errors.
法院以程序错误为由撤销了下级法院的判决。
The new law has the potential to annul many existing regulations.
新法律有可能废除许多现行规定。
After an investigation, the election results were annulled due to widespread irregularities.
经过调查，由于广泛的违规行为，选举结果被宣布无效。
The judge annulled the agreement on the grounds that one party lacked mental capacity.
法官以一方缺乏心智能力为由，宣布该协议无效。
The visa was annulled when it was found out that the information provided was false.
发现所提供的信息是虚假的后，签证被取消了。
The company's license was annulled for failing to meet safety standards.
该公司因未达到安全标准而被吊销执照。
The court ruling effectively annulled the previous administration's policy.
法院的裁决实际上废除了前一届政府的政策。
The agreement was annulled because both parties failed to fulfill their obligations.
由于双方都未能履行其义务，该协议被取消。