occurrence
- n. 发生；出现；事件；发现
考试真题
- International interest in the therapeutic qualities of the Mediterranean diet began back in the late 1950s, when medical researchers started to link the occurrence of heart disease with diet.
2017年12月六级真题（第一套）听力 Section C
- The fact that this is not an uncommon occurrence means that dishonest persons might be able to access bank accounts in electronic payments systems and steal from someone else's accounts.
2013年考研真题（英语二）完形填空 Section Ⅰ