tuba root

例句：

1. 1.The musician used a tuba root to play the instrument.
   这位音乐家用大号筒子演奏乐器。
2. 2.The roots of the tree are deep and sturdy.
   这棵树的根深且结实。
3. 3. The roots of the plant help it grow and survive in the soil.
   植物的根有助于它生长和在土壤中生存。