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。
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.
附近长着一颗树，现在知道是一棵金鸡纳树。
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。
Gin gets its flavor from juniper tree berries, and the quinine in tonic comes from the cinchona tree.
金鸡纳宁，辛可宁一种生物碱，c19h22n2o，由金鸡纳树的树皮中。
An alkaloid, C19H22N2O, derived from the bark of various cinchona trees and used as an antimalarial agent.
金鸡纳宁，辛可宁一种生物碱，c19h22n2o，由金鸡纳树的树皮中。
An alkaloid, C19H22N2O, derived from the bark of various cinchona trees and used as an antimalarial agent.
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