英文關鍵字
activist
care
concept
earth
eco
ecological
ecology
environment
environmental
global
globe
male
man
nature
planet
plastic
pollution
poster
protection
recycle
save
world
young
appeal
bottle
city
conservation
dirt
dirty
disaster
disposal
dump
energy
garbage
green
junk
landfill
litter
mask
natural
pile
portrait
problem
recycling
refuse
renewable
reuse
trash
volunteer
waste