occurrence
n. 发生的事,事件;发生,出现(尤指意外且令人不快的事)
复数 occurrences
例句
Vandalism used to be a rare occurrence here.
过去这里很少发生故意破坏公物的事。
《牛津词典》
Complaints seemed to be an everyday occurrence.
投诉似乎成了天天发生的事。
《柯林斯英汉双解大词典》
One of them is a word counter, which counts for certain word occurrence in several files.
其中之一是单词计数器,它统计某一单词在几个文件中出现的次数。