cystourethroscope

例句：

1. 1. The doctor used acystourethroscope to examinethe patient's urinarytract.
   医生使用尿道镜检查患者的泌尿系统。
2. 2. During the operation, the surgeon inserteda cystourethroscopeinto the patient's urethra.
   在手术过程中，外科医生将尿道镜插入患者的尿道。
3. 3. Thecystourethroscope revealed that the patienthad a small stone in hisurethra.
   尿道镜显示患者尿道内有小石头。