名词
中文翻译：原因
同义词：
['cause', 'reason', 'etiological']
例句：
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1.The cause of the disease is unknown.
这种病的原因未知。
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2. The researchers found that genetics played a significant role in the etiology of the disease.
研究人员发现，遗传因素在疾病的起因中起着重要作用。
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3.Etiology research has greatly improved our understanding of the causes of diseases.
病因研究大大提高了我们对疾病原因的了解。