英文關鍵字
male
virus
carrier
icon
symbol
human
biological
defense
protective
bacterias
syringe
shield
vitamin
healthcare
pills
graphic
white
disease
biology
flu
immune
infection
medicine
microbiology
prevention
strong
system
treatment
bacterial
health
infectious
vaccination
antibiotic
healthy
motion
animation
pictogram
hd
animated
item
sign
color