occurrence

英 [krns] 美 [krns]

n.发生的事情;存在的事物;发生;出现;存在

复数： occurrences

例句：The occurrence of such things is by no means fortuitous.

出现这种问题绝不是偶然的。

Two things account for its occurrence.

发生这件事的原因有两个。