perennial root

例句：

1. 1. The tree has a perennial root system that allows it to grow in poor soil conditions.
   这棵树有一个多年生根系系统，使它能够在贫瘠的土壤条件下生长。
2. 2. The perennial root of the plant is what sustains its growth and survival.
   植物的多年生根系是其生长和生存的基础。
3. 3.The roots of the tree are deeply embedded in the ground, providing support for the entire structure.
   树根深深地扎在地里，为整个结构提供支撑。