英文關鍵字
asian
beverage
bin
bottle
child
childhood
clean
cleaner
concept
cultivate
dirty
ecology
education
environment
environmental
garbage
global
hand
healthy
housework
hygiene
junk
kid
learning
little
nature
object
outdoor
outdoors
park
people
person
plastic
pollution
preschool
protection
public
recycle
recycling
reduce
reuse
reused
rubbish
save
throw
throwing
trash
warming
waste
yellow
young