occurrences
An occurrence is something that happens.
incident , happening , event , phenomenon
Complaints seemed to be an everyday occurrence.
似乎天天都有投诉。
The occurrence of something is the fact that it happens or is present.
The greatest occurrence of coronary heart disease is in those over 65.
65岁以上人群的冠心病发病率最高。
There is no general agreed explanation for the occurrence of hallucinations.
对于幻觉的出现没有公认的解释。