名词
中文翻译：频率
同义词：
['rate', 'recurrence', 'occurrence']
例句：
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1.The frequency of earthquakes in this area is relatively high.
这个地区的地震频率相对较高。
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2.The frequency of traffic accidents has decreased significantly since the implementation of stricter driving regulations.
自从实施了更严格的交通规则后，交通事故的频率显著下降。
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3. The frequency of rainfall varies greatly from year to year.
降雨的频率每年变化很大。