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blood type
A blood type (also called a blood group) is a classification of blood based on the presence and absence of antibodies and also based on the presence or absence of inherited antigenic substances on the surface of red blood cells (RBCs). These antigens may【20220205】托福词汇大全 -- 1 地理
托福词汇大全 -- 1 地理： 建议复制 -> 打印 -> 手写记忆。托福共有12000单词，值得一试。 insular island peninsula islet marine maritime moist ledge oasis tide ebb continent