mountain avens

例句：

1. 1. The mountain avens is a beautiful flowering plant.
   山毛榉是一种美丽的开花植物。
2. 2. The mountain avens grows in the forests of the northeastern United States.
   山毛榉生长在美国东北部的森林中。
3. 3. The mountain avens has been used for medicinal purposes for centuries.
   山毛榉自古以来就被用于药用。