organo chlorine insecticide

例句：

1. 1. Theuse of organochlorine insecticides has been banned in many countries due to their toxic effects on the environment.
   由于对环境的有毒影响，许多国家已经禁止使用有机氯杀虫剂。
2. 2. The farmers used to spray this kind of insecticide on their crops to control pests.
   农民过去常用这种杀虫剂喷洒作物以控制害虫。
3. 3. Due to its harmful effects, the use of organochlorine insecticides is now strictly regulated and monitored by environmental agencies.
   由于其有害影响，现在对有机氯杀虫剂的使用受到严格的监管和环境机构的监控。