1. cultural method of pest control 
   农业防治
2. IV. Exercising Strict Control over the Precursor Chemicals 
   四、严格管制易制毒化学品
3. The methodology used in pest control is continuously reviewed to enhance effectiveness and efficacy. 
   该署不断检讨防治虫鼠的方法，务求提高工作成效。
4. The first genetically modified animal to leave the lab will probably not be one designed to control a pest. 
   第一只离开实验室进入野外的转基因动物也许不是设计好去控制害虫的。
5. Laws and regulations on the control of such chemicals have gradually been perfected. 
   　　不断健全管制易制毒化学品的法规和规章。

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