- 释义：
- n.发生，出现；(偶发的)事件
- 例句：
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Many studies are made on the pattern of earthquake occurence in space, time and magnitude.
对地震发生的空间, 时间和震级的图象作了许多研究.
换一句
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Understanding these causes is helpful for taking effective strategies to prevent the occurence of cardiac tamponade.
了解这些心包填塞的原因有助于采取有效措施预防其发生.
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Events that are aperiodic and represent an occurence.
不定期的并表示出现一次的事件.
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