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来源:雅诚德英语网
The cellular elements supply oxygen (RBC), protect against foreign organisms and antigens (white cells), and initiate coagulation (platelets).
血细胞提供氧气(红细胞),抵御外来微生物和抗原(白细胞),并启动凝血(血小板)。
The cellular elements supply oxygen (RBC), protect against foreign organisms and antigens (white cells), and initiate coagulation (platelets).
血细胞提供氧气(红细胞),抵御外来微生物和抗原(白细胞),并启动凝血(血小板)。