cooccurrence

例句：

1. 1.The two events cooccurred on the same day.
   这两个事件在同一天同时发生。
2. 2.The researchers found that the cooccurrence of certain genes was associated with a higher risk of cancer.
   研究人员发现，某些基因的共现与癌症风险增加有关。
3. 3. The scientists believe that the cooccurrence of these factors may explain the unusual behavior of the patient.
   科学家们认为，这些因素的共现可能解释了病人不寻常的行为。