Much of this damage is caused by free radicals: unstable molecules created when the body USES oxygen.

对这种损害是由于自由基：不稳定分子时创建的身体使用氧气。

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Researchers know that unstable molecules called free radicals can damage your cells' DNA, upping the risk of cancer.

研究者知道被称为自由基的不稳定分子能破坏你的细胞dna，增加得癌症的概率。

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Free radicals produced by many biochemical processes or toxic substances, such as chemicals, pesticides, heavy metals etc, are unstable molecules that have an electron missing.

阿自由基产生的许多生化过程或有毒物质，如化学品，农药，重金属等，都是不稳定的分子，有一个电子失踪。

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Grapeseed's CEO Kristin Fraser Cotte says the company's claim of anti-aging is based on the fact that its products contain antioxidants, or substances that protect cells against unstable molecules called free radicals, which can damage cells.

WSJ: An Oil's Promises, From Cooking to Cosmetics