1. (对疾病)免疫的,有免疫力的
    If you are immune to a particular disease, you cannot be affected by it.

    e.g. This blood test will show whether or not you're immune to the disease...
           这个血检会显示你是否对这种疾病具有免疫力。
    e.g. Most adults are immune to Rubella.
           大多数成人对风疹具有免疫力。

2. (反应等)免疫的，免疫系统的
    An immune response or reaction is a reaction by the body's immune system to something harmful that is affecting it.

    e.g. It is hoped the procedure will trigger an immune response that will wipe out HIV-infected cells while leaving non-infected cells unharmed.
           希望这一治疗会激发免疫反应,清除感染了艾滋病病毒的细胞，同时又不损伤未感染细胞。

3. 不受影响的
    If you are immune to something that happens or is done, you are not affected by it.

    e.g. Whilst Marc did gradually harden himself to the poverty, he did not become immune to the sight of death...
           尽管马克逐渐对贫困现象无动于衷,但他对于死亡的惨象还是不免动容。
    e.g. Football is not immune to economic recession.
           足球不可能不受到经济衰退的影响。

4. 免除的;豁免的
    Someone or something that is immune from a particular process or situation is able to escape it.

immune在线翻译

    e.g. Members of the Bundestag are immune from prosecution for corruption...
           德国联邦议院的成员可免受贪腐罪的起诉。
    e.g. No one is immune from scandal.
           谁都难免会有丑闻。