英文關鍵字
adrenaline
adventure
aircraft
airplane
airport
antarctic
antarctica
arctic
aviation
barneo
blade
blue
climate
diving
drifts
environment
equipment
evening
expedition
explorers
extreme
flight
freeze
glacier
ice
midair
nature
north
polar
pole
rotate
science
scientists
scuba
sky
snow
solar
sports
sun
sundown
sunlight
sunshine
tourism
transport
travel
white
winter