pollen wall structure

例句：

1. 1.The pollen wall structure of the plant is essential for its survival and reproduction.
   植物的花粉壁结构对于其生存和繁殖至关重要。
2. 2. The pollen wall structure plays a crucial role in the process of pollination.
   花粉壁结构在授粉过程中起着关键作用。
3. 3. The study of pollen wall structure has led to new insights into the mechanisms of plant reproduction.
   研究花粉壁结构有助于我们深入了解植物繁殖的机制。