英文關鍵字
bag
basket
bin
box
can
city
clean
cleaner
cleaning
collecting
container
dirt
dirty
disposal
dump
dustman
eco
ecology
environment
garbage
household
industry
janitor
janitorial
job
lowpaid
man
management
occupation
outdoor
people
plastic
profession
recycle
recycling
rubbish
sanitation
service
sidewalk
street
sweeper
tidy
trash
trashcan
uniform
urban
utilities
waste
work
worker