strontiuresis

例句：

1. 1. The patient was diagnosed with ankylosing spondylitis and required treatment.
   患者被诊断出患有强直性脊柱炎，需要治疗。
2. 2. The doctor recommended a course of medication for the patient's ankylosing spondylitis.
   医生为患者的强直性脊柱炎开了一剂药物。
3. 3. The patient experienced pain and stiffness in their spine due to ankylosing spondylitis.
   由于强直性脊柱炎，患者感到背部疼痛和僵硬。