横向
1
Total number of people in an area
5
Flat elevated area of land
6
Imaginary line around the middle of Earth
7
Land surrounded by water
8
Flat grassland in tropical regions
11
Largest hot desert in the world
12
Long-term weather patterns of an area
纵向
2
Steep rock face at edge of land
3
Distance north or south of equator
4
Large area covered with trees
5
Land surrounded by water on three sides
9
Half of the Earth
10
Goods sold to another country