英文關鍵字
background
beach
bottle
busy
care
clean
coast
collect
concept
contamination
day
dirty
disposal
dump
earth
eco
ecology
environment
garbage
global
green
heap
horizontal
human
initiative
junk
litter
nature
object
ocean
people
picking
planet
plastic
pollution
protection
recycling
responsibility
rubbish
sea
spring
tourist
trash
volunteer
volunteering
waste
water
woman
work