英文關鍵字
cold
flu
outside
street
tissue
adult
allergy
city
cough
epidemic
girl
healthcare
infection
nature
nose
people
sick
sneeze
spring
woman
young
airborne
allergic
attractive
blowing
cleaning
closeup
handkerchief
one
outdoors
person
pollen
respiratory
rhinitis
sinus
summer
symptom
unwell
vasomotor
disease
fever
ill
virus
air
pollution
blossom