名词中文翻译
中文翻译：频率
同义词：
['rate', 'quantity', 'recurrence']
例句：
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1.The frequency of occurrence is increasing.
发生的频率在增加。
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2.The frequency of this event has been reduced by 50%.
这个事件的发生率已经降低了50%。
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3. The frequency of traffic accidents has decreased significantly in recent years.
近年来，交通事故的发生率显著下降。