英文關鍵字
awareness
bin
bottle
caucasian
child
collection
conservation
container
disposal
earth
eco
ecological
ecology
environment
environmental
family
garbage
global
green
home
household
litter
man
material
nature
paper
people
person
planet
plastic
pollution
protection
recyclable
recycle
reduction
responsible
reuse
rubbish
save
separate
separation
sort
symbol
trash
used
waste
young
youth
zero