pyrethrum powder

例句：

1. 1. This insecticide is made from pyrethrumpowder.
   这种杀虫剂是用香胶粉制成的。
2. 2. The bees use pyrethrum powder to protect their hives.
   蜜蜂使用香胶粉来保护蜂巢。
3. 3. The pyrethrum powder isused to repel insects from the garden.
   用香胶粉来驱赶花园里的昆虫。