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　　注：文本及音频选自《新托福iBT词汇分类突破》Unit106；单词释义主要来自《美国传统词典》。

　　Blood is re-oxygenatedin the lungs,火博官网 where the oxygen enters the blood through tiny capillaries and combines with the hemoglobinin the red blood cells, before returning to the blood stream.火博平台 Air is drawn into the lungs by inhalingand is the source of the oxygen that passes into the blood. As the air is exhaledfrom the lungs, it expels unwanted carbon dioxide which has replaced the oxygen. Contractions of the diaphragm, and of the muscles between the ribs, control the size and gross capacity of the chest.

　　?oxygenate?äk-si-j?-?nāt, äk-?si-j?-:火博网站 To treat, combine, or infuse with oxygen.

　　充氧：用氧处理、结合或注入

　　?hemoglobin?hē-m?-?glō-b?n: The iron-containing respiratory pigment in red blood cells of vertebrates, consisting of about 6 percent heme and 94 percent globin.

　　血红蛋白：脊椎动物红血细胞中一种含铁的呼吸色素，由大约6%的血红素和94%的球蛋白组成

　　?inhale: To draw (air or smoke, for example) into the lungs by breathing; inspire.

　　吸入：通过呼吸吸进（如空气或烟） 肺内；吸气

　　?exhale: To breathe out.

　　把…呼出

　　?diaphragm?dī-?-?fram: A muscular membranous partition separating the abdominal and thoracic cavities and functioning in respiration.

　　横隔膜：一种分隔胸腔和腹腔并起呼吸作用的肌性膜隔

　　?rib: One of a series of long, curved bones occurring in 12 pairs in human beings and extending from the spine to or toward the sternum.

　　肋骨：在人体中以十二对出现的一系列长的，弯曲的骨头，从脊椎向或朝向胸骨延伸