杆

例句：

1. 1. The tree has a tall and sturdy girth.
   这棵树有高大而结实的枝干。
2. 2. The carpenter used wooden planks to build the house.
   木匠用木板建造了房子。
3. 3. The poles of the flag stand straight up, as if they are trying to reach for the sky.
   旗帜的杆直挺挺地竖立着，好像它们在试图触及天空。