Particulates, especially PM2.5's, have been shown to cause disease.
颗粒，特别是PM 2.5已经显示致病能力。
These nitrosamines have been shown to cause cancer in laboratory animals.
这些亚硝胺被证实会对试验室的动物致癌。
Formaldehyde is a carcinogen that has been shown to cause cancer in lab animals.
甲醛是一种在实验室动物身上被证明会导致癌症的致癌物质。
Formaldehyde is a carcinogen that has been shown to cause cancer in lab animals.
甲醛是一种在实验室动物身上被证明会导致癌症的致癌物质。
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