他的整张脸都亮了起来，稍微有一点血色。

His whole face brightened and a little color came into it.

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凯瑟琳一手牵着一个孩子，把他们带到大厅里，安置在火炉前，他们的白脸很快地有了血色。

Catherine took a hand of each of the children, and brought them into the house and set them before the fire, which quickly put colour into their white faces.

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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.

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