urethraladj.尿道的urethran.尿道urethral meatoplasty尿道口成形术urethral instillator尿道(冲洗)注射器urethral bulbar vein尿道球静脉urethral catheter in导尿管在里面； 留置导尿管urethral advancement尿道前移术urethral obstruction尿道阻塞urethral foreign body尿道异物urethral catheter out导尿管脱出Urethral resectoscope尿道电切镜urethral tuberculosis尿道结核