免疫系统

immune system

to excuse sb / to exempt / to remove or dismiss from office / to avoid / to avert / to escape / to be prohibited

old variant of 絻[wen4]

immunity (to disease)

epidemic / plague

to connect / to relate to / to tie up / to bind / to be (literary)

system / department / faculty

to tie / to fasten / to button up

to connect / to arrest / to worry

system / CL:個|个[ge4]

to gather / to unite / to unify / whole