1、In the lungs, oxygen is added to the blood and carbon dioxide is removed, causing the blood to hematose.
在肺部，氧气被添加到血液中，二氧化碳被移除，导致血液进行氧合作用。

2、Patients who have trouble hematosing may require supplemental oxygen therapy.
那些血液氧合困难的患者可能需要补充氧气治疗。