Home/nonoccurrencenonoccurrence/non-uh-kur-uhns, -kuhr-/US // ˌnɒn əˈkɜr əns, -ˈkʌr- //多次发生,多发事件,多次发生的事件,多次事件Definitionsn.名词 noun1: absence or lack of occurrence. Level 5Browse all words →