横向
1
Height above sea level
5
Flat elevated area of land
6
Large slow-moving mass of ice
7
Seasonal heavy rainfall
9
Landform where river meets the sea
10
Region surrounding the North Pole
12
Ridge of rock or coral near the surface
纵向
2
Area where water covers the soil
3
Line dividing two countries
4
Half of the Earth
5
Largest ocean on Earth
8
Narrow sea inlet between cliffs
11
Low area between mountains
13
Cold treeless Arctic plain