wood sugros

例句：

1. 1.The tree is made of wood.
   这棵树是用木头做的。
2. 2. Timber is a type of wood that is used for building and furniture.
   原木是一种用于建筑和家具制作的木材类型。
3. 3. Wood is renewable, while timber is not.
   木材是可再生的，而原木则不是。