英文關鍵字
bag
blue
bottle
charity
clean
cleaning
consumption
dirty
disposal
eco
ecological
ecology
ecosystem
environment
environmental
flora
garbage
garden
gloves
green
help
helping
junk
lifestyle
material
outdoor
park
plastic
polluting
pollution
protection
recycle
recycling
refuse
reuse
rubbish
scrap
segregation
sustainable
throw
trash
urban
volunteer
working