nicotibina

例句：

1. 1. Nicotine is a highly addictive substance.
   尼古丁是一种高度上瘾的物质。
2. 2. The tobacco industry relies heavily on nicotine to sell their products.
   烟草行业严重依赖尼古丁来销售他们的产品。
3. 3. Smoking contains high levels of nicotine, which can be harmful to health.
   吸烟含有高水平的尼古丁，对健康有害。