urogenital opening

例句：

1. 1.The doctor advised him to keep the urine bag open for a few hours.
   医生建议他让尿袋保持开放几个小时。
2. 2.The baby's urine output was significantly higher than that of adults.
   婴儿的尿量明显高于成人。
3. 3. The researcher found that the urine analysis could provide valuable insights into the patient's health condition.
   研究者发现，尿分析可以提供关于病人健康状况的重要见解。