pollen drift

例句：

1. 1. Pollen drift is a natural process that occurs in many ecosystems.
   花粉漂移是一种自然过程，发生在许多生态系统中。
2. 2. The wind was blowing so strongly that the pollen drifted all over the garden.
   风刮得非常猛烈，花粉四处飘散。
3. 3. The scientist observed that pollen drift can affect plant growth and reproduction.
   科学家观察到，花粉飘散会影响植物的生长和繁殖。