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The hemoglobin then picks up carbon dioxide, the waste product of metabolism, which it truly is then taken back again on the lungs and breathed out into the air. The full cycle begins once more.我来推荐两个网站，一个几乎涵盖了所有中文书籍电子版，一个几乎涵盖了所有外文书籍电子版。Distributive shock occurs w