英文關鍵字
60s
80s
asian
caucasian
cleaning
close
collecting
community
countryside
eighties
environment
female
friends
front
garbage
good
group
happy
helpful
helping
horizontal
litter
male
man
men
motion
nature
neighbor
neighbour
outdoors
people
person
responsibility
retired
retirement
rubbish
senior
seniors
sixties
slow
smiling
sunset
tidying
together
trash
two
up
vertical
view
volunteer
volunteering
waist
woman
women