phagocytosis

例句：

1. 1. The immune system uses phagocytosis to destroy pathogens in the body.
   免疫系统利用吞噬作用来摧毁体内的病原体。
2. 2. During the infection process, bacteria are engulfed by macrophages and then digested.
   在感染过程中，细菌被巨噬细胞吞噬并消化。
3. 3. The phagocytosis of the microbes was a critical step in the development of the immune response.
   微生物的吞噬是免疫反应发展的关键步骤。