英文關鍵字
adult
aqua
balance
care
clean
closeup
conservation
consumption
coronavirus
covid19
ecology
environmental
epidemic
flow
future
h1n1
hands
hygiene
male
man
merscov
minimalist
nature
ncov
outbreak
palms
pandemic
people
person
preservation
prevention
protect
pure
quality
refresh
resource
responsibility
sars
save
sink
stream
unrecognizable
using
virus
washing
water
white