bulbourethral vein

例句：

1. 1.The doctor found a small bulbourethral vein in her vagina.
   医生在她的阴道里发现了一个小的阴道静脉。
2. 2. During childbirth, the bulbourethral vein can become blocked, leading to difficulty in delivery.
   分娩过程中，阴道静脉可能会堵塞，导致分娩困难。
3. 3. The bulbourethral vein is an important structure for sexual pleasure and orgasm.
   阴道静脉是性生活和高潮的重要结构。