英文關鍵字
bags
beach
city
cleaner
cleanliness
cleanup
coastal
collect
community
disposal
duty
ecoconscious
ecofriendly
efficiency
employment
environment
garbage
hygiene
hygienic
janitor
job
landscape
maintenance
neatness
occupation
outdoor
preservation
profession
professional
public
recycling
responsibility
sanitation
seaside
service
sustainable
teamwork
trash
urban
urbanization
waste
waterfront
worker
working