wood stone interface

例句：

1. 1. The tree was made of wood.
   这棵树是用木头做的。
2. 2. He used a saw to cut down the logs.
   他用锯子把原木锯下来。
3. 3. Wood is a renewable resource that can be used for many purposes.
   木头是一种可再生资源，可以用于许多用途。