心材

例句：

1. 1. The carpenter carefully removed the heartwood from the tree.
   木匠小心翼翼地从树上取下了心材。
2. 2. The furniture was made from high-quality heartwood.
   家具是由高质量的心材制成的。
3. 3. The woodworker used the heartwood to make a beautiful vase.
   木工用心材制作了一个美丽的花瓶。