名词
中文翻译：最终致癌物
同义词：
['ultimate carcinogen', 'ultimate carcinogenic agent']
例句：
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1. The study found that exposure to this substance was a major risk factor for cancer.
研究发现，这种物质的暴露是癌症的主要风险因素。
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2. The company has been accused of using this carcinogen in their products.
该公司被指控在其产品中使用这种致癌物。
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3.Researchers are trying to identify the precise mechanism by which this carcinogen causes cancer.
研究人员正在尝试确定这种致癌物的确切机制是如何引起癌症的。