flanged branch

例句：

1. 1.The tree's trunk is covered in a thick layer of moss.
   这棵树的树干上覆盖着厚厚的一层苔藓。
2. 2. The flanged branch of the tree is perfect for climbing.
   这棵树的凸缘分支非常适合攀爬。
3. 3.The flanged branch of the tree provides shade and shelter for birds.
   这棵树的凸缘分支为鸟类提供了遮荫和庇护所。