oxygen free radical

例句：

1. 1.Oxygen free radicals are believedto be responsible for the aging process inour bodies.
   人们认为无氧自由基是我们身体老化过程的原因。
2. 2. The study found thatexposure to oxygen free radicals can leadto cancer.
   研究发现，暴露于无氧自由基可能会导致癌症。
3. 3. Researchers have been tryingto find ways to reduce the amount ofoxygen free radicals in the environment.
   研究人员一直在尝试找到减少环境中无氧自由基数量的方法。