hemonode

例句：

1. 1. Hemoglobin is the protein that carries oxygen in red blood cells.
   血红蛋白是携带在红细胞中的氧气蛋白。
2. 2. The hemoglobin levels in the patient's blood were low.
   病人血液中的血红蛋白水平很低。
3. 3. Red blood cells are responsible for carrying oxygen throughout the body.
   红细胞负责将氧气输送到整个身体。