横向
1
Low area between mountains
4
Land surrounded by water
5
One of seven major landmasses
10
Region surrounding the North Pole
纵向
2
Raised area of land, smaller than a mountain
3
Large slow-moving mass of ice
6
Ridge of rock or coral near the surface
7
Narrow sea inlet between cliffs
8
Area where water covers the soil
9
Flat grassland in tropical regions
11
Region between the two tropic lines
12
Height above sea level