zero branch

例句：

1. 1.The zero branch of the tree is where the roots go to the ground.
   树的零度分支是根通向地面的地方。
2. 2. The zero branch of the tree is where the roots go to the ground.
   树的零度分支是根通向地面的地方。
3. 3. The zero branch of the tree is where the roots go to the ground.
   树的零度分支是根通向地面的地方。