stilt root

例句：

1. 1.The old tree was used as a stilt root to support the roof.
   这棵老树被用作支柱支撑屋顶。
2. 2.He planted a stilt root in the ground to create a raised garden bed.
   他在地上种了一个立桩来创建一个高高的花园床。
3. 3. The stilt root is essential for supporting the weight of the structure.
   这个立桩对于支撑结构的重量至关重要。