blood(血液) (血液) cell red fluid connective tissue erythrocytes
血浆plasma红细胞 erythrocytes白细胞 leukocytes血小板 platelets
后 我们通过一个小活动了解血液的各个组成部分 platelet-red blood
high blood pressure in midlife ups your risk of brain damage in
amid infection-fighting white blood cells and purple platelets
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