Most countries limit the production, sale, and use of narcotics because of their addictive properties and detrimental effects and the incidence of drug abuse .

大多数国家都限制生产、销售和使用麻醉镇痛药，因为它们有使人上瘾的特性和有害的效果，还可能发生滥用药物的情况。

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One of the reasons that violent gangs and narcotics abuse flourish in Mexico .

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She formerly worked on the House Select Committee on Narcotics Abuse and Control.

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