timber tree

例句：

1. 1. Timber is essential for building houses and bridges.
   木材对于建造房屋和桥梁至关重要。
2. 2. The forest was full of tall trees, their trunks gnarled and twisted.
   森林里长满了高高的树木，它们的树干扭曲而弯曲。
3. 3. Timber is a renewable resource, which means it can be harvested and replanted.
   木材是一种可再生资源，这意味着它可以被采伐并重新种植。