英文關鍵字
beautiful
bird
birkenau
camp
cloud
countryside
environment
europe
field
flowers
foliage
forest
grass
green
guard
high
historical
history
holocost
hunter
landscape
lawn
look
lookout
natural
nature
nobody
observation
observe
old
outdoor
outdoors
point
scenery
season
sky
spring
structure
summer
sunbeam
sunrise
tourism
tower
travel
trees
view
watch
watchtower
wild
wildlife
wooden