erythrinan

例句：

1. 1. Red blood cells are responsible for carrying oxygen throughout the body.
   红血细胞负责将氧气输送到全身。
2. 2.Erythrocytes play a crucial role in maintaining blood volume and pH balance.
   红细胞在维持血液量和酸碱平衡方面起着至关重要的作用。
3. 3.During anemia, the number of red blood cells may decrease, leading to fatigue and shortness of breath.
   贫血时，红细胞数量可能会减少，导致疲劳和呼吸困难。