横向
1
Visual representation of an area
2
Deep narrow valley with steep sides
3
Largest river in South America
5
Half of the Earth
6
Steep rock face at edge of land
8
Height above sea level
9
Low-lying land surrounded by higher ground
10
Flat grassland in tropical regions
纵向
1
Seasonal heavy rainfall
4
Distance north or south of equator
7
Largest hot desert in the world
11
Region surrounding the North Pole