organophosphorus pesticide

例句：

1. 1. Thefarmers use this type of pesticide to control the weeds in their fields.
   农民们使用这种农药来控制田地里的杂草。
2. 2. The chemical warfare agent was a highly toxic substance that could be used as an organophosphorus pesticide.
   这种化学武器是一种高度有毒的物质，可以用作有机磷农药。
3. 3. The government has banned the use of some organophosphorus pesticides due to concerns about their environmental impact.
   由于对环境影响的担忧，政府已经禁止使用某些有机磷农药。