scalecide

例句：

1. 3. rodenticide例句：1. The farmers used to use scalecides to control the weeds in their fields.
   农民过去使用杀虫剂来控制他们田地里的杂草。
2. 2. The farmer applied a new scalecide to kill the rats that were causing damage to his crops.
   这位农民给害虫施用了一种新的杀鼠剂，以杀死那些损坏他庄稼的老鼠。
3. 3.The company has developed a new scalecide that can be sprayed directly on the soil to prevent weeds from growing.
   该公司开发了一种可以直接喷洒在土壤上的新除草剂，以防止杂草生长。