Nowadays, though I seldom visit doctors, when I do, I ask for concoctions of traditional Chinese medicine that is vegan in origin.

如今，虽然我很少去看医生，但只要我去，我就会要求吃中药，而那就是传统意义上的素食主义。

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This review covers research into two primary compounds from lichens: antibiotic from lichens and lichenan, and gives a detailed introduction to their bioactivity, origin and value in medicine.

本文着重介绍了药用地衣主要的两大类化学物质，即地衣抗生素和地衣多糖类物质的来源、生物活性等，并对地衣化学的发展前景做了展望。

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To explore the future of medicine, we analyzed its present situation and origin.

从医学的现状及源流出发，探讨医学的未来。

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