名词
中文翻译：频率
同义词：
['rate', 'magnitude', 'quantity']
例句：
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1.The frequency of earthquakes in this area is increasing.
这个地区的地震频率在增加。
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2. The frequency of traffic accidents has been decreasing over the past decade.
过去十年里，交通事故的频率一直在下降。
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3. The frequency of occurrence of this phenomenon is quite low.
这种现象发生的频率相当低。