亚铁血红素

例句：

1. 1. He was diagnosed with a rare blood disorder.
   他被诊断出患有一种罕见的血液疾病。
2. 2. The red color of the blood is due to its high concentration of hemoglobin.
   血液的红色是由于其高浓度的血红蛋白。
3. 3. Iron deficiency anemia is a common condition in developing countries.
   缺铁性贫血是发展中国家的常见病症。