赤霉素

例句：

1. 1. The plant hormone is essential for the growth of many plants.
   这种植物激素对许多植物的生长至关重要。
2. 2. The research on this hormone has led to new discoveries in agriculture.
   关于这种激素的研究已经导致了农业中的新发现。
3. 3. The application of this hormone can increase crop yields by up to 50%.
   这种激素的应用可以提高作物产量高达50%。