negative anemia

例句：

1. 1. The patient had been suffering from negative anemia for years.
   患者多年来一直患有阴性贫血。
2. 2. Negative anemia can be caused by a variety of factors, including poor nutrition and lack of exercise.
   阴性贫血可以由多种因素引起，包括营养不良和缺乏运动。
3. 3. In some cases, negative anemia may require treatment with iron supplements to improve the patient's overall health.
   在某些情况下，阴性贫血可能需要用铁补充剂治疗以改善患者的健康状况。