英文關鍵字
bag
beach
charity
cheerful
child
cleaning
cleanup
clothing
coast
collection
community
concepts
conservation
contamination
dirty
disaster
eco
ecology
environment
environmental
family
female
garbage
girl
glove
holding
land
male
manual
materials
miser
nature
people
plastic
polluted
pollution
poor
poverty
protective
recyclable
recycling
refuse
relief
residential
scavenger
sea
shore
standing
teamwork
volunteer
waste
water
wet
work
worker