pale cinchona

例句：

1. 1. The pale cinchona bark is used in traditional medicine to treat fevers.
   苍白的金鸡纳树皮在传统医学中用于治疗发烧。
2. 2.The cinchona leaf has been used for centuries as a natural remedy for malaria.
   金鸡纳叶自古以来就被用作天然的疟疾疗法。
3. 3. In the Amazon rainforest, the pale cinchona tree provides habitat for many species of birds and animals.
   在亚马逊雨林中，苍白的金鸡纳树为许多鸟类和动物提供了栖息地。