genital valve

例句：

1. 1. The genital valve is crucial for the proper functioning of the reproductive system.
   生殖阀对于生殖系统的正常功能至关重要。
2. 2.During sexual intercourse, the genital valves open to allow sperm to enter the female reproductive tract.
   在性交过程中，生殖阀打开以允许精子进入女性的生殖道。
3. 3. The genital valves are located at the entrance of the vagina and help to regulate the flow of menstrual blood.
   生殖阀位于阴道入口处，有助于调节月经血的流动。