angustifoliate

例句：

1. 1. The leaves of this tree are beginning to angustifoliate.
   这棵树的叶子开始凋落了。
2. 2.The old tree is angustifoliating, and it's a sign of decay.
   这棵老树正在凋落，这是衰败的迹象。
3. 3.The autumn leaves angustifoliated on the ground, creating a beautiful fall scene.
   秋天的落叶铺满了地面，形成了一幅美丽的秋日景象。