银杏有抗氧化的特性，可以帮助对抗伤害细胞的自由基；自由基可能会造成细胞老化。
Ginkgo contains antioxidant properties that help fight free radicals in the body. Free radicals may contribute to the premature aging of cells.
他想要确切的知道RNA病毒是如何在不伤害细胞的情况下感染细胞的，并且能使他们成为动物基因中的一部分。
He wonders exactly how the RNA viruses are infecting cells without harming them, allowing them to become a part of an animal's DNA.
能够破坏真菌的化学物质也倾向于损害人类细胞，所以很难在不伤害宿主的情况下消除这种感染。
The chemicals that damage fungi tend to damage human cells as well, so it's hard to attack such infections without harming the host.
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