cease to be effective

• 停止生效；失效

cease to be effective的用法和样例：

例句

1. As from the end of the month, this regulation will cease to have effect.
   从本月底开始，本规章将停止生效。
2. Will the vaccine be useless if the virus mutates?
   如果病毒突变，疫苗会失效吗？
3. Titles to the estate has not been extinguished.
   财产的所有权尚未失效。