英文關鍵字
medical
masks
blue
color
protect
respiratory
tract
bacteria
combat
coronavirus
epidemic
airborne
allergy
background
beautiful
bright
care
cold
concept
copy
space
covid
disposable
ear
loop
equipment
face
flat
position
flu
glamorous
health
hygiene
disease
infection
infectious
mask
medicine
mouth
nose
object
paper
protection
safety
saturation
stop
surgical
top
view
fashionable
virus
white