医生 / 建议 / 他 / 在 / 治疗期间 / 禁戒 / 烟酒 / 以免 / 影响 / 药物效果

医生建议他在治疗期间禁戒烟酒，以免影响药物效果。

The doctor advised him to abstain from cigarettes and alcohol during treatment so that they would not affect the medication's effectiveness.