Only the immune system develops the homologous function and keeps the opposite balance under the condition of normal, the machine body then can maintain the existence.
只有免疫系统在正常条件下发挥相应的作用和保持相对的平衡，机体才能维持生存。
Only the immune system develops the homologous function and keeps the opposite balance under the condition of normal, the machine body then can maintain the existence.
只有免疫系统在正常条件下发挥相应的作用和保持相对的平衡，机体才能维持生存。
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