immune
/ɪˈmjuːn/adjective
1- resistant to a particular infection or toxin owing to the presence of specific antibodies or sensitized white blood cells免疫的：
they were naturally immune to hepatitis B.
他们生来对乙型肝炎免疫。
1.1
- protected or exempt, especially from an obligation or the effects of something受保护的; 免除的（尤指无需尽义务或不受影响的）：
they are immune from legal action.
他们免受诉讼。
1.2
- predic. not affected or influenced by something不受影响的：
no one is immune to his immense charm.
无人不受他巨大魅力的吸引。
1.3
- attrib. Biology of or relating to immunity【生】（与）免疫（有关）的：
the body's immune system.
机体的免疫系统。
词源
late Middle English （in the sense 'free from (a liability)'）： from Latin immunis 'exempt from public service or charge'， from in- 'not' + munis 'ready for service'. Senses relating to physiological resistance date from the late 19th cent.