Useful drugs are made from inorganic substances or are plant and animal by-products.
Useful drugs are made from inorganic substances or are plant and animal by-products.
有用的药物是由无机物或植物和动物的副产品制造的。
Useful drugs are made from inorganic substances or are plant and animal by-products.
有用的药物是由无机物或植物和动物的副产品制造的。