英文關鍵字
antarctica
arctic
bad
beautiful
bergs
blue
boat
change
climate
clouds
coastline
cold
continent
desert
dry
ecosystem
environment
exploration
extreme
floats
formation
freeze
frozen
glacier
global
ice
iceberg
landscape
melting
mountains
movement
nature
ocean
outdoor
polar
pole
science
sea
shelves
snow
south
southern
streams
surface
travel
unique
warming
water
white
wind