1.Tonic water has its origins in South America, where the bark of the cinchona tree was used to treat malaria.

水起源于南美洲，金鸡皮曾被用来治疗疟。

2.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.

这种药物来源于南美洲原产金鸡皮，到 1856 年， 对该药物需求已经超过了现有供应。机翻