ischemic fatigue

例句：

1. 1. He was so tired from the long hours of work that he felt like he had been through a marathon.
   他因为长时间的工作而感到筋疲力尽，感觉就像跑完了马拉松。
2. 2.The patient's condition worsened after the surgery, leading to ischemic fatigue.
   手术后，病人的状况恶化了，导致缺血性疲劳。
3. 3. During the long flight, she experienced ischemic fatigue due to lack of oxygen.
   在漫长的飞行中，由于缺氧，她经历了缺血性疲劳。