Tell people why it is harmful to use insecticides and weed killers.
Tell people why it is harmful to use insecticides and weed killers.
（一）告诉人们使用杀虫剂，除草剂等化学药品是如何有害。
Tell people why it is harmful to use insecticides and weed killers.
（一）告诉人们使用杀虫剂，除草剂等化学药品是如何有害。