烟碱

例句：

1. 1. Hesmoked a cigarette every day to relievehis stress.
   他每天抽一根烟来缓解压力。
2. 2. The doctor prescribed him a nicotine patch to help him quit smoking.
   医生给他开了一种尼古丁贴片来帮助他戒烟。
3. 3. Nicotine addiction is aserious health concern for many people.
   尼古丁成瘾是许多人严重的健康问题。