英文關鍵字
dry
cough
blood
line
symbol
outline
infection
virus
asthma
bronchiectasis
ill
linear
contour
background
lined
smoke
allergy
allergic
xray
cigarettes
coronavirus
covid19
pandemic
pulmonary
vessels
symptom
chronic
obstructive
human
sick
monochrome
icon
motion
graphic
animation
pictogram
hd
animated
item
sign
black