英文關鍵字
asian
background
bag
beach
bottle
boy
child
cleaning
cleanup
coast
concept
conservation
day
dirty
disaster
ecology
environment
environmental
garbage
global
hand
help
kid
landscape
man
natural
nature
object
ocean
package
person
plastic
pollution
problem
protection
recycle
rubbish
sand
save
sea
shore
spill
thai
trash
volunteer
waste
water