bulbus urethrae

例句：

1. 1.The doctor found a small bulbus urethrae in the patient's urine sample.
   医生在患者的尿样中发现了一个小的尿道球。
2. 2.The patient had to undergo surgery to remove the bulbus urethrae.
   患者不得不接受手术来移除尿道球。
3. 3.The bulbus urethrae is responsible for guiding the flow of urine from the kidneys to the bladder.
   尿道球负责将尿液从肾脏引导到膀胱。