An insecticide derived from a plant, e.g. pyrethrum (from Chrysanthemum flowers).
An insecticide derived from a plant, e.g. pyrethrum (from Chrysanthemum flowers).
3来源于植物的杀虫剂，例如除虫菊（来源于菊花）。
An insecticide derived from a plant, e.g. pyrethrum (from Chrysanthemum flowers).
3来源于植物的杀虫剂，例如除虫菊（来源于菊花）。