英文關鍵字
adult
backpack
black
boy
caucasian
city
concept
copyspace
corona
coronavirus
covid
covid19
disease
epidemic
face
facemask
flu
guy
health
illness
infect
infection
influenza
lifestyle
male
man
mask
medicine
outdoor
outdoors
pandemic
people
person
portrait
protection
quarantine
respiratory
sarscov2
street
student
teenager
underpass
urban
virus
wearing
young