protraction dose

例句：

1. 1. The patient required a protraction dose of medication to manage his condition.
   患者需要一种延长剂量的药物来管理他的病情。
2. 2. The research team decided to use a protraction dose of radiation therapy for their study.
   研究团队决定使用延长剂量的放射治疗来研究他们的问题。
3. 3.The doctor prescribed a protraction dose of antibiotics for the patient's infection.
   医生为患者的感染开了一个延长剂量的抗生素。