英文關鍵字
2019ncov
air
allergy
background
bacteria
beautiful
biohazard
caucasian
corona
coronavirus
covid
covid19
disease
distance
epidemic
face
facemask
female
flu
girl
hair
health
hygiene
illness
infection
influenza
isolated
mask
medical
medicine
nature
outbreak
outdoor
pandemic
park
people
person
pollution
portrait
prevention
preventive
protect
protection
protective
quarantine
respirator
respiratory
safety
sick
sickness
strain
street
urban
virus
woman
women
young