英文關鍵字
alert
animation
background
bacteria
biohazard
biology
care
change
city
concept
contagious
corona
coronaviridae
coronavirus
digital
digitally
disease
element
epidemic
generated
health
idea
infection
loop
macro
medical
medicine
microbe
microscopic
montage
motion
moving
nature
no
object
organism
pandemic
people
pneumonia
rotating
seamless
sick
spreading
urban
virus
warning