名词
中文翻译：白细胞
同义词：
['white blood cell', 'leukocyte']
例句：
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1.He has a weak immune system, which makes him susceptible to infections.
他的免疫系统较弱，容易感染。
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2. The doctor prescribed antibiotics for his infection.
医生给他开了抗生素治疗感染。
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3. White blood cells are responsible for fighting off infections and diseases.
白细胞负责抵抗感染和疾病。