So, I have a bacteria infection, stimulates my immune system, I start making antibodies that bind to an antigen specific to that bacteria.

所以 如果我被细菌感染了,我的免疫系统被激活,开始制造抗体,这些抗体结合到细菌特异性的抗原上

耶鲁公开课 - 生物医学工程探索课程节选

Won't help me against other bacteria, but only against the one that I've got.

但对其他细菌却不起作用,只能抵抗我感染到的这种细菌

耶鲁公开课 - 生物医学工程探索课程节选