oliguria

例句：

1. 1. He was diagnosed with kidney colic and had to be hospitalized for treatment.
   他被诊断出患有肾绞痛，不得不住院接受治疗。
2. 2.The patient's condition worsened, and he needed urgent surgery to relieve the urinary obstruction.
   患者的病情恶化，需要紧急手术来解除尿路梗阻。
3. 3. Kidney colic is a common cause of hospitalization in children, especially during summer vacations.
   肾绞痛是儿童住院的常见原因，尤其是在暑假期间。