root band

例句：

1. 1. The tree's root band is visible through the soil.
   这棵树的根系带在土壤中可见。
2. 2.The roots of the plant are crucial for its survival.
   植物的根系对其生存至关重要。
3. 3. The root band helps to stabilize the plant in the ground.
   根系带有助于将植物稳固在地面上。