植物生长素

例句：

1. 1. The plant growth regulator is essential for the healthy growth of plants.
   植物生长调节剂对植物的健康生长至关重要。
2. 2. The researchers found that the plant growth regulator could promote the development of new tissues in the plant.
   研究人员发现，植物生长调节剂可以促进植物新组织的发育。
3. 3. The plant growth regulator can be used to control the growth of certain types of plants.
   植物生长调节剂可以用来控制某些类型植物的生长。