英文關鍵字
animal
background
barbed
barbs
barbwire
barrier
bird
birds
blue
boundary
branch
cloud
danger
electric
evening
feather
fence
flight
flying
golden
line
magic
metal
nature
old
orange
outdoor
outside
power
prison
ranch
resting
security
sharp
silhouette
sitting
sky
summer
sun
sunlight
sunrise
sunset
tree
wild
wildlife
wing
wings
wire