cocarcinogens

例句：

1. 1.The study found that exposure to certain cocarcinogens could increase the risk of developing cancer.
   研究发现，某些致癌前体物暴露可能会增加患癌症的风险。
2. 2.Cocarcinogens have been shown to be responsible for a significant number of cancer cases.
   研究表明，许多癌症病例与致癌前体物有关。
3. 3. Environmental factors, such as air pollution and smoking, are known to be cocarcinogens that can cause cancer.
   已知空气污染和吸烟等环境因素是已知的致癌前体物，可能引发癌症。