free radical
noun [ C often plural ] chemistry specialized uk/?fri? ?r?d.?.k?l/ us/?fri? ?r?d.?.k?l/
自由基,游离基
a molecule that has an extra electron and therefore reacts very easily with other molecules
Free radicals have been implicated in cancer and many other serious diseases. 游离基是罹患癌症和许多其他严重疾病的潜在原因之一。


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