英文關鍵字
antarctica
movement
ice
iceberg
nature
ocean
surface
sea
cold
snow
water
arctic
landscape
white
floats
global
warming
polar
frozen
mountains
climate
glacier
travel
blue
extreme
south
pole
melting
unique
environment
erosion
earth
freshwater
streams
expedition
boat
wind
preserve
outdoor
winter
sky
floating
exploration
coastline
sheet
freeze
desert
remote
geology
scenic