英文關鍵字
aquatic
clean
concept
conservation
crushing
cup
disposable
dispose
drink
earth
eco
ecological
ecology
effort
empty
environment
environmental
exertion
garbage
global
hand
hands
intension
junk
liquid
litter
management
nature
object
people
person
plastic
pollution
press
protect
recyclable
recycle
recycled
recycling
reuse
rubbish
save
trash
waste
water
white