"Your children have infected you with this head cold"
"society was infected by racism"
"His laughter infects everyone who is in the same room"
infect是什么意思
infectant是什么意思
infected是什么意思
infection是什么意思
infectious是什么意思
infective是什么意思
infectivity是什么意思
infector是什么意思
infectum是什么意思
infecund是什么意思