| 词汇 | occurrence | 
| 释义 | occurrence  noun uk/əˈkʌr.əns/ us/əˈkɝː.əns/   (HAPPENING)   C1 [ C ]发生的事;事件;遭遇  something that happens  Street-fights are an everyday occurrence in this area of the city. 在该市的这一地区,街头斗殴每天都会发生。  Synonyms: episode (EVENT)eventhappening incident phenomenon (EXISTING THING) 
   (EXISTING)   C1 [ U ]存在;存在的数量  the fact of something existing, or how much of it exists  The study compares the occurrence of heart disease in various countries. 该项研究比较了不同国家心脏病的发病率。  | 
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