英文關鍵字
2020
air
bacteria
city
control
coronavirus
day
disease
disinfect
disinfection
disinfects
distance
doctor
earth
epidemic
face
flu
fresh
glasses
gloves
healthcare
infection
kvadraty
lifestyle
liquid
male
man
mask
medical
outdoors
pandemic
people
protection
protective
quarantine
safe
sanitation
spring
street
suit
summer
surface
territory
travel
virus
walk