英文關鍵字
alaska
antarctic
antarctica
arctic
blue
change
climate
cloudy
cold
dark
dim
ecological
ecology
environment
frigid
frost
frozen
glacial
glacier
global
horizon
ice
iceberg
icy
landscape
marine
melting
natural
nature
night
north
ocean
polar
pole
scenery
sea
sky
snow
south
stormy
submerged
surface
tempest
underwater
warming
water
weather
winter