Robertson: Oxidative stress is an accumulation of molecules that comes about because of chemical reactions, or stuff we ingest, things that get in our body. These can get inside the cells and really wreak havoc.

　　Dr. Robertson is researching a molecule called antioxidants which might protect cells against damage from oxidative stress.

　　罗伯逊：氧化应激是一种由化学反应或我们摄取的东西——即被我们身体吸收的物质——造成的毒性分子堆积。这些毒性分子会进入细胞内并造成严重破坏。

　　罗伯逊医生正在研究一种被称为抗氧化剂的分子，这种分子可能会保护细胞不受氧化应激的破坏。