英文關鍵字
adult
air
breathing
caucasian
coronavirus
covid19
end
enjoying
female
freedom
fresh
gloves
green
hat
holiday
hygiene
lake
look
mask
measures
nature
outbreak
pandemic
park
people
person
prevention
protection
protective
quarantine
relax
restriction
spring
stop
straw
summer
trees
virus
walk
water
white
woman