The occurrence of rain was unexpected.
这场发生的雨是意外的。
Lightning is a rare occurrence here.
闪电在这里是罕见的现象。
Earthquakes are a natural occurrence.
地震是一种自然现象。
He reported the occurrence to the police.
他向警方报告了这一事件。
The occurrence of flu is seasonal.
流感的发生是季节性的。
The occurrence of errors is minimal.
错误的发生是极少的。
Such an occurrence is rare.
这样的情况是罕见的。
The occurrence of accidents has decreased.
事故的发生减少了。
He noted the occurrence in his diary.
他在日记中记下了这一事件。
Snow is a common occurrence in winter.
雪在冬天是常见的现象。
Common occurrence
屡见不鲜
frequent occurrence
频繁发生；经常发生
occurrence rate
出现率；发生率；发生比率
rare occurrence
罕见事件
prevent occurrence
预防发生
复数: occurrences;
