cyclic sterility

例句：

1. 1.The researchers found that the bacteria had acyclic sterility cycle.
   研究人员发现细菌有一个循环不育周期。
2. 2. Thisdisease is characterized by cyclic sterility.
   这种疾病的特点是周期性不育。
3. 3. The study revealed that theprocess of cyclic sterility could beinfluenced by environmental factors.
   研究发现，循环不育的过程可能受到环境因素的影响。