A colorless, poisonous alkaloid, C10H14N2, derived from the tobacco plant and used as an insecticide. It is the substance in tobacco to which smokers can become addicted.

 
  • 尼古丁无色有毒生物碱,C10H14N2,从烟草中提取被用作杀虫剂,它是烟草中致使吸烟者上瘾的物质
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