late 14c., "exempt from service or obligation," from Old French immunité and directly from Latin immunitatem (nominative immunitas) "exemption from performing public service or charge," from immunis "exempt, free," from assimilated form of in- "not, opposite of" (see in- (1)) + munis "performing services" (compare municipal), from PIE *moi-n-es-, suffixed form of root *mei- (1) "to change" (see mutable). Medical sense "protection from disease" is 1879, from French or German.
实用例句
1. The embassy official claimed diplomatic immunity and was later released.
那名使馆官员申请外交豁免，随后被释放。
来自柯林斯例句
2. Because of the immunity of the immature insects, it'simportant to spray regularly.
由于幼虫对药物有免疫力，因此必须经常喷药。
来自柯林斯例句
3. The police are offering immunity to witnesses.
警方对证人将免予起诉。
来自柯林斯例句
4. The vaccine provides longer immunity against flu.
这种疫苗对流感的免疫效力时间较长。
来自《权威词典》
5. A strong immunity to reinfection develops after one year.
