defectoscope

例句：

1. 1. The doctor used a defectoscope to examine the patient's anus.
   医生使用肛门镜检查患者的肛门。
2. 2.During surgery, the surgeon uses a defectoscope to visualize the surgical area.
   在手术期间，外科医生使用肛门镜来可视化手术区域。
3. 3. The defectoscope was a revolutionary tool that allowed doctors to perform surgeries with greater precision.
   肛门镜是一种革命性的工具，使医生能够以更高的精确度进行手术。