coca

例句：

1. 1. Coca leaves are used in traditional medicine to treat fevers and pain.
   古柯叶在传统医学中被用来治疗发烧和疼痛。
2. 2. The drug cocaine is a powerful stimulant that can be addictive.
   可卡因是一种强效的兴奋剂，可能会上瘾。
3. 3. Coca leaves have been used for centuries as a natural remedy for digestive problems.
   古柯叶自古以来就被用作自然疗法，用于解决消化问题。