medical clearance

例句：

1. 1. The patient needs to obtain a medical clearance before undergoing surgery.
   患者需要在手术前获得医疗许可。
2. 2. The company has been granted a medical clearance by the government for its new project.
   该公司已获得政府对其新项目的医疗许可。
3. 3. Before entering the operating room, the patient must have a medical clearance from the anesthesiologist.
   在进入手术室之前，患者必须从麻醉师那里获得医疗许可。