英文關鍵字
ash
black
brown
burn
burnt
charcoal
clean
cleaning
danger
darkening
deck
dirty
dry
dusk
ecology
ember
environmental
field
fire
flame
footprints
forest
garbage
heap
heat
log
nature
orange
pile
plant
red
rubbish
shadow
smoke
smoldering
snow
sun
sunny
tracks
trash
wheat
winter
wood
wooden