横向
1
Flat grassland in tropical regions
5
Distance north or south of equator
6
Region surrounding the North Pole
10
Imaginary line around the middle of Earth
纵向
2
Wearing away of land by water or wind
3
Tool for finding directions
4
Large natural elevation of earth
7
Largest hot desert in the world
8
Large area covered with trees
9
Half of the Earth