名词短语
中文翻译：发生率
同义词：
['incidence rate', 'incidence rate of disease例句：1. The study found that the rate of incidence of certain diseases has increased significantly in recent years.（研究发现，近年来某些疾病的发生率显著增加。）']
例句：
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1. The study found that the rate of incidence of certain diseases has increased significantly in recent years.
研究发现，近年来某些疾病的发生率显著增加。
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2. The rate of incidence of this disease is still unknown, but it is believed to be relatively low.
这种病的发生率仍然未知，但据信相对较低。
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3. The government has been working on a plan to reduce the rate of incidence of accidents at work.
政府一直在努力制定一个计划，以减少工作场所事故的发生率。