thiostrepton

例句：

1. 1.This pesticide is effective against a wide range of weeds and insects.
   这种杀虫剂对多种杂草和昆虫都有效。
2. 2. The farmers use this herbicide to control weeds in their fields.
   农民们使用这种除草剂来控制他们田地里的杂草。
3. 3.The chemical was developed to combat the problem of crop damage caused by fungi.
   这种化学制剂是为了对抗由真菌引起的作物损害问题而开发的。