英文關鍵字
billboard
clean
green
city
campaign
neat
society
join
citizens
cliparts
quotes
inspiring
environmental
action
environment
ecofriendly
sustainability
conservation
urban
landscape
nature
scenic
fresh
resources
biodiversity
ecology
awareness
responsibility
community
participation
motivation
outdoor
graphic
art
design
symbol
icon
advertisement
promotion
marketing
public
message
sign
neatness
greenery
cleanliness
slow
motion
footage
cinematic
video