返回 【医学英语视听】四 血液 II 医学课堂 血液 (4/4)

听力简介:


Tips: Plasma makes up more than half the volume of blood. Red blood cells are disk-like and can live three to four months and then die. White blood cells are larger than red blood cells, and are the body’s main defense against germs, bacteria and viruses. Platelets are smaller than red blood cells and help blood to clot. What are the four components of blood?

Watch the lecture clip and interpret what you hear.


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以音频听写为准

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