n.免疫；免疫性；免除；豁免
Children who have gotten the chickenpox build an immunity to it so that they do not get it a second time. 已经得过水痘的小孩会对它免疫,所以不会再得第二次。
This vaccine will give you immunity for two years. 接种这种疫苗可有两年免疫力。
Nobody will be given immunity from taxation. 没有人可以免除被征税。
He has diplomatic immunity. 他有外交豁免权。
自身免疫
