immunity to disease that occurs as part of an individual's natural biologic makeup
双语例句
The innate immune system seemed rather drab in comparison. 相较之下，先天免疫看起来就枯燥多了。
The body has a hard time eliminating the bacteria completely, and natural immunity after a bout with the microbes lasts only about six months. 一来人体不易将它们给驱逐殆尽，再者染上一回披衣菌所产生的自然免疫，也只能维持六个月左右。
