genital canals

例句：

1. 1. The study of genital canals is essential for understanding human reproduction.
   研究生殖器官对于理解人类生殖至关重要。
2. 2.During sexual intercourse, the genital canals are exposed and cleaned to prevent infection.
   性交时，生殖器官暴露并被清洗以防止感染。
3. 3. The doctor performed a thorough examination of the patient's genital canals before prescribing medication.
   医生在开药前对患者的生殖器官进行了彻底的检查。