urethral false passage

例句：

1. 1.The doctor examined the patient's urethral discharge for signs of infection.
   医生检查了患者的尿道分泌物，以寻找感染的迹象。
2. 2. Urethral catheters are used to drain urine from the bladder.
   尿道导管用于从膀胱排放尿液。
3. 3. Urethral strictures can cause pain during sexual intercourse.
   尿道狭窄可能导致性交时疼痛。