英文關鍵字
above
aerial
altitude
animal
beautiful
beauty
bird
calm
channel
danube
delta
earth
environment
europe
flight
fly
flying
grass
green
holiday
jungle
lake
land
landscape
movement
natural
nature
panorama
plant
pond
reed
reflection
reserve
river
scenery
season
sky
skyline
summer
swamp
tourism
travel
vacation
vegetation
view
water
wetland
wilderness
wildness
willow