1. Scientists explore the mystery of natural immunity and whether it could be a key to an aids vaccine. 科学家如何探索疾病的谜团和免疫史看看能否找到爱滋病疫苗的关键。
2. EMC experience with testing and the familiarity with the standards for Surge, Burst, ESD and RF Immunity. 有电磁兼容（EMC）测试经验，熟悉浪涌、脉冲群、静电放电和射频辐射抗扰等标准。
3. Since a relatively narrow bandwidth is involved, it is also likely that ac excitation also offers greater immunity to RF interference than dc excitation. 因为包含相对地狭窄的带宽，并且是可能的交流励磁为射频干涉并且提供比较伟大的安全性直流励磁。
英英解释
n.
1. the state of not being susceptible
2. (medicine) the condition in which an organism can resist disease
3. the quality of being unaffected by something
4. an act exempting someone
