write invalidate

例句：

1. 1.The company's policy was invalidated by the court decision.
   公司的政策被法院决定无效。
2. 2.The contract was invalidated because of fraud.
   合同因欺诈而被宣告无效。
3. 3.The new law will invalidate all existing regulations.
   新法律将废除所有现有规定。