urinary organ

例句：

1. 1.The kidneys are the primary urinary organs in humans.
   肾脏是人类主要的泌尿器官。
2. 2.The surgeon removed the damaged part of the patient's urinary organ.
   外科医生切除了病人泌尿器官受损的部分。
3. 3.The study focused on the function and development of the urinary organs in infants.
   该研究关注了婴儿泌尿器官的功能和发育。