英文關鍵字
afternoon
bag
beach
bottle
can
child
clean
cleaning
cleanup
coast
color
community
contemporary
day
eco
education
environment
environmental
environmentalist
female
garbage
generosity
green
holding
litter
male
metal
multiethnic
nature
outdoor
outside
people
person
plastic
pollution
recycling
responsibility
sustainability
teamwork
trash
volunteer
volunteering
waste