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人类的血液为什么是红色的?因为血红素与氧气结合时会变成红色,但是,当血红素与二氧化碳结合时就会变成黑色,因此好的气色需要好的循环与充足的氧气。以下介绍几个增加好气色的补氧方法
Why is human blood red? Since heme turns red when combined with oxygen, heme turns black when combined with carbon dioxide, so a good color requires good circulation and plenty of oxygen. The following describes several ways to increase good gas color oxygen