英文關鍵字
bag
branches
contaminate
dirty
discarded
disposable
dump
earth
ecological
ecology
element
environment
environmental
field
flurry
garbage
grass
green
hovering
hurricane
junk
landscape
litter
meadow
natural
nature
off
one
package
packaging
plastic
pollution
polyethylene
polymer
problem
recycle
recycling
refuse
rubbish
rush
spring
tornado
trash
tree
waste
weather
wind
windy