occurrence

n. 发生, 事件, 出现
【医】 发生
相关词组:
be of rare occurrence
be of frequent occurrence

形容词:occurrent 

oc.cur.rence

n.（名词）
The act or an instance of occurring.
发生：发生的行为或例子
Something that takes place.
发生的事情

【引伸】
occur.rent
adj.（形容词）
<参考词汇><同义词>occurrence,happening,event,incident,episode,circumstanceThese nouns all refer to something that takes place or comes to pass.
这些名词均指发生或即将过去的事情。
Occurrence andhappening are the most general:
Occurrence 和happening 是最一般的：
例句：
an everyday occurrence;
日常之事；

例句：
a happening of no great importance.
没有重大意义的事情。

Event usually signifies a notable occurrence:
Event 通常指能被注意到的事情：
例句：
The events of the day are reported on the evening news.
那天的事件已在晚间新闻上作了报导，

例句：
.Great events make me quiet and calm; it is only trifles that irritate my nerves. (Victoria).
.伟大的 事件使我平静和从容；只有那些琐事才令我心烦. （维多利亚）。

Incident may apply to a minor occurrence:
Incident 可用于小事情：
例句：
Errors are inescapable incidents in the course of scientific research. The term may also refer to a distinct event of sharp identity and significance:
在科研过程中，错误是不可避免的事情。 这个词也可以用指具有重大意义的非常事件：

例句：
His debut at Carnegie Hall was the first of a succession of exciting incidents in his life. Anepisode is an incident in the course of a progression or within a larger sequence:
他在卡内基音乐堂的首次登台是他生命中令人激动的事件中的第一个。 Episode 是在某一事物的发生过程中或在更大的进程中的事情：

例句：
.Happiness was but the occasional episode in a general drama of pain. (Thomas Hardy).
.欢乐不过是普遍的苦痛过程中的一个小插曲. （托马斯·哈代）。

Circumstance in this comparison denotes a particular incident or occurrence:
Circumstance 在这个比较中指一件特定的事情：
例句：
.What schoolboy of fourteen is ignorant of this remarkable circumstanceô. (Macaulay).
.十四岁的学生在这件值得注意的事件中会忽略掉什么呢ô. （麦考莉）