check trunk

例句：

1. 1. The carpenter carefully checked the trunk before cutting it.
   木匠在切割之前仔细检查了树干。
2. 2.The tree's trunk was so thick that it couldn't be seen from the ground.
   这棵树的树干太粗了，从地面上看不见。
3. 3. The trunk of the tree is covered in green moss.
   这棵树的树干上覆盖着绿色的苔藓。