英文關鍵字
2020
agai
air
background
bacteria
brown
city
control
coronavirus
day
disease
disinfect
disinfection
disinfects
distance
doctor
epidemic
face
flu
fresh
girl
glasses
gloves
hands
healthcare
infection
kvadraty
lifestyle
liquid
man
mask
medical
outdoors
pandemic
people
protection
protective
quarantine
river
safe
sanitation
spring
suit
summer
travel
virus
walk
woman
young