root of lung radix of lung

例句：

1. 1. The tree's root system is extensive and deep.
   这棵树的根系广泛且深入。
2. 2. The roots of the plant are visible through the soil.
   植物的根在土壤中可见。
3. 3. The roots of the tree are slowly growing deeper into the earth.
   这棵树的根正慢慢地向地下深处生长。