lamina dura

例句：

1. 1. The tree's lamina dura is strong enough to support its weight.
   这棵树的硬皮足够强壮，可以支撑它的体重。
2. 2. The scientist studied the lamina dura of the plant to understand its growth patterns.
   科学家研究了植物的硬皮，以了解其生长模式。
3. 3. The lamina dura of the bark is where the tree stores food for the winter.
   树皮的硬皮是树木储存食物过冬的地方。