羽根

例句：

1. 1. The bird's feathers are soft and fluffy.
   这只鸟的羽毛柔软而蓬松。
2. 2. The roots of the tree are deep in the soil.
   这棵树的根深深地扎在土壤里。
3. 3. The feathers on the bird's wings are delicate and beautiful.
   鸟翅膀上的羽毛细腻而美丽。