横向
1
Flat grassland in tropical regions
3
Half of the Earth
6
Large natural elevation of earth
7
Height above sea level
12
Physical features of land
纵向
2
Land surrounded by water on three sides
4
Largest hot desert in the world
5
Visual representation of an area
8
Line dividing two countries
9
Distance north or south of equator
10
Total number of people in an area
11
Ridge of rock or coral near the surface