英文關鍵字
antarctica
map
vector
geography
country
africa
europe
earth
sea
asia
land
political
cartography
blue
continent
world
australia
atlas
detailed
territory
usa
south
boundary
background
ocean
america
countries
education
north
border
travel
russia
pacific
city
continents
oceania
globe
planet
height
depth
color
atlantic
information
medium
navigational
equipment
river