英文關鍵字
adult
breathing
caucasian
color
copyspace
coronavirus
covid19
deep
disease
distancing
end
feeling
female
good
green
happy
hat
hygiene
mask
measures
nature
outdoor
pandemic
park
people
person
prevention
protective
quarantine
relax
restriction
rules
safe
shirt
social
straw
summer
trees
virus
walk
white
woman