氧气运输系统只需铁原子便可运行，但血色素提供的蛋白质“笼状”结构能够大大提高其效率。
An oxygen transport system is possible with just the iron atoms, but it is very much more effective with the protein "cage" the structure of hemoglobin provides.
图4 显示了蛋白质血色素的视图（图像提供了一对立体模型；见参考资料）。
Figure 4 offers a visual look at the protein hemoglobin (image is a stereo pair; see Resources for the image source).
铁在能量的新陈代谢有重要的作用，是血色素组成的必需成分。能把血液里的蛋白质转化成氧。
Iron plays a key role in energy metabolism and is a necessary component of hemoglobin, the protein that transports oxygen in the blood.
目前，国内外测定运动量的方法有：测试心率、血压、血色素、尿蛋白及血乳酸等多种方法。
At present, domestic and international methods of determination of physical activity are the heart rate, blood pressure, hemoglobin, urine protein and blood lactic acid test and other methods.
经过糖化血色素，胰岛素使用，微量白蛋白尿，心血管疾病和抑郁评分模型中的夹杂物，每一个有显着相关的预期寿命。
After inclusion of A1C, insulin use, microalbuminuria, cardiovascular disease, and depression scores in the model, each was significantly related to life expectancy.
经过糖化血色素，胰岛素使用，微量白蛋白尿，心血管疾病和抑郁评分模型中的夹杂物，每一个有显着相关的预期寿命。
After inclusion of A1C, insulin use, microalbuminuria, cardiovascular disease, and depression scores in the model, each was significantly related to life expectancy.
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