内吸磷

例句：

1. 1.The pesticide was effective in controlling the weeds.
   这种农药有效地控制了杂草。
2. 2.The farmers used this chemical to protect their crops from diseases.
   农民们使用这种化学物质来保护他们的作物免受疾病侵害。
3. 3.The farmer applied the chemical at the right time to ensure maximum effectiveness.
   农民在正确的时间施用这种化学以获得最大效果。