疲劳是一种常见的缺铁表现，缺铁可导致贫血或者说降低血红细胞水平。贫血也可以表现为异常苍白。
Fatigue is a common side effect of iron deficiency, which can lead to anemia, or low red blood cell levels. Anemia can also show up as abnormal pallor.
图示红细胞（RBC）与正常相比，体积变小且中心苍白区增加。
The RBC's here are smaller than normal and have an increased zone of central pallor.
红细胞数目过少称为“贫血”。表现为面色苍白，疲劳和呼吸急促。
Having too few red cells is called "anemia". It can make a person look pale and feel tired and short of breath.
结果显示，山羊的可视黏膜苍白贫血，红细胞明显变形，红细胞表面有附红细胞体附着；
The results indicated that the goat showed symptoms of anemia, visualization mucosa pale and weak, erythrocyte were deformed and Eperythrozoon adhered to the red blood cell surface.
大多数RBC体积很小，并且缺乏中部苍白的区域，是球形红细胞。
The size of many of these RBC's is quite small, with lack of the central zone of pallor.
红细胞会把氧气带到全身，红细胞的数量低于正常水平时即所谓的贫血时，此时你会感到疲劳乏力、脸色苍白或呼吸急促。
Red cells carry oxygen around the body. When the number of red cells is below normal this is called anemia. Anemia can make you tired, pale or short of breath.
红细胞会把氧气带到全身，红细胞的数量低于正常水平时即所谓的贫血时，此时你会感到疲劳乏力、脸色苍白或呼吸急促。
Red cells carry oxygen around the body. When the number of red cells is below normal this is called anemia. Anemia can make you tired, pale or short of breath.
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