名词
中文翻译：频率
同义词：
['rate', 'frequency', 'recurrence']
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 occurrence of this disease is increasing.
这种病的发病率正在上升。
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3. The frequency of communication between the two countries has been decreasing.
两国之间的交流频率正在减少。