英文關鍵字
atmosphere
basket
beer
bin
bottle
bottom
center
clean
container
damage
debris
different
ecovolunteering
ecology
effect
empty
environment
environmental
garbage
glass
harmful
impact
industry
influence
irresponsible
littering
paper
plastic
point
pollute
pollution
problem
process
production
putting
recycle
recycling
reusable
rubbish
sign
social
sorting
top
topview
trash
usable
used
view
volunteer
waste