英文關鍵字
2019ncov
adult
boy
breathe
care
caucasian
child
control
coronavirus
covid19
curly
danger
disease
epidemic
face
flu
happy
health
incubation
infection
infectious
isolation
kid
lifestyle
male
mask
medical
medicine
one
outdoors
pandemic
park
people
person
pollution
portrait
prevention
protect
protection
protective
quarantine
safety
schoolboy
teenager
virus
young