英文關鍵字
adult
away
bag
bags
bin
can
care
chute
city
clean
communicating
construction
dump
dwelling
environment
full
garbage
green
group
hand
holding
house
landscape
life
litter
man
management
metal
moscow
nature
optimistic
outdoors
overflowing
park
pavement
people
plastic
rubbish
street
throwing
trash
two
volunteer
volunteering
volunteers
wall
waste
winter
woman