英文關鍵字
animal
background
bird
birds
black
blue
cable
communicate
communication
connect
contact
countryside
day
electric
electrical
electricity
environment
flag
flock
fly
group
high
home
horizontal
intersection
lens
line
many
natural
nature
network
outdoor
patriotic
patriotism
peace
pigeon
pole
power
resting
return
row
silhouette
sitting
sky
solitude
summer
sunset
swallow
telephone
waiting
wallpaper
when
wild
wildlife
wing
wire