urethraladj.尿道的urethran.尿道urethral prolapse尿道脱垂urethra stricture尿道狭窄urethral drainage尿道引流(法)urethral papillae[医] 尿道乳头urethral catheter尿道导管urethral meatitis尿道口炎Urethra extension尿道延伸urethral lithotomy[医] 尿道切石术urethral hematuria尿道性血尿urethral membranes[医] 尿道膜