English主要词典
occurrence
Universal Words
noun
1 [C] something that happens or exists:
a common / everyday / frequent / regular occurrence * Vandalism used to be a rare occurrence here. * The program counts the number of occurrences of any word, or group of words, within the text. -< EVENT
2 [U] ~ (of sth) the fact of sth happening or existing:
a link between the occurrence of skin cancer and the use of computer monitors