White blood cells and platelets are the two other kinds of blood cells, which help fight infection, while platelets help blood to clot.
白细胞和血小板是其他两种类型的血细胞，他们能够帮助机体抵御感染，血小板可以促使血液凝固。
Your body makes three types of blood cells - white blood cells to fight infection, platelets to help your blood clot and red blood cells to carry oxygen throughout your body.
人体有三种血细胞——白细胞负责抵御感染，血小板负责凝血，红细胞则负责给全身供氧。
White blood cells help your body fight infection. Red blood cells carry oxygen to all parts of your body. Platelets help your blood clot.
白细胞能帮助身体抵抗感染。红细胞携带氧气到你身体的所有部位。血小板则有助于你的血液凝固。
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