The drug is derived from the bark of the cinchona tree, native to South America, and by 1856 demand for the drug was surpassing the available supply.
这种药物是从原产于南美洲的金鸡纳树的树皮中提取的。到了1856年，对这种药物的需求已经超过了现有的供应。
Gin gets its flavor from juniper tree berries, and the quinine in tonic comes from the cinchona tree.
杜松子酒的口味来源于杜松子的浆果，而碳酸奎宁水中的奎宁来自金鸡纳树。
Nearby grew a tree, nowadays known as Cinchona.
附近长着一颗树，现在知道是一棵金鸡纳树。
Nearby grew a tree, nowadays known as Cinchona.
附近长着一颗树，现在知道是一棵金鸡纳树。
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