use of insecticide

例句：

1. 1.The use of insecticides has significantly reduced the number of pests in our garden.
   使用杀虫剂已经显著减少了我们花园中的害虫数量。
2. 2.To control the spread of diseases, farmers often use insecticides.
   为了控制疾病的传播，农民经常使用杀虫剂。
3. 3.The proper use of insecticides is crucial for the health and safety of both humans and animals.
   正确使用杀虫剂对于人类和动物的健康与安全至关重要。