stump root

例句：

1. 1. The tree had a stump root that was difficult to dig through.
   这棵树有一个难以挖掘的树桩根。
2. 2.The old tree had a stump root that was still holding the branches up.
   这棵老树有一个树桩根，仍然支撑着树枝。
3. 3.The roots of the tree were exposed by the heavy rain, revealing the stump root.
   大雨使树的根部暴露出来，露出了树桩根。