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取紫草(Lithospermum crythrorhizon、Arnebia euchroma、A. guttata)粉末约0.1g,加苯2ml,振摇后泸过,泸
Take Lithospermum crythrorhizon, Arnebia euchroma, A. guttata powder about 0.1g, add benzene 2ml, shake after shaking,